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Finding the Fourth Proportional to 449,440.76, 620,231.46 and 248,236.76

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Solution

The fourth proportional to 449,440.76, 620,231.46 and 248,236.76 is: 342,568.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,440.76 : 620,231.46 = 248,236.76 : x
  2. Step 2: Convert to fraction form
    449,440.76/620,231.46 = 248,236.76/x
  3. Step 3: Cross multiply
    449,440.76x = 620,231.46 × 248,236.76
  4. Step 4: Simplify right side
    449,440.76x = 153,964,248,080.47
  5. Step 5: Solve for x
    x = 153,964,248,080.47/449,440.76
  6. Step 6: Final answer
    x = 342,568.50

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.