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Finding the Fourth Proportional to 449,263.70, 620,009.17 and 245,333.60

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Solution

The fourth proportional to 449,263.70, 620,009.17 and 245,333.60 is: 338,574.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,263.70 : 620,009.17 = 245,333.60 : x
  2. Step 2: Convert to fraction form
    449,263.70/620,009.17 = 245,333.60/x
  3. Step 3: Cross multiply
    449,263.70x = 620,009.17 × 245,333.60
  4. Step 4: Simplify right side
    449,263.70x = 152,109,081,709.11
  5. Step 5: Solve for x
    x = 152,109,081,709.11/449,263.70
  6. Step 6: Final answer
    x = 338,574.16

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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.