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Finding the Fourth Proportional to 449,438.76, 620,228.70 and 248,234.76

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Solution

The fourth proportional to 449,438.76, 620,228.70 and 248,234.76 is: 342,565.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,438.76 : 620,228.70 = 248,234.76 : x
  2. Step 2: Convert to fraction form
    449,438.76/620,228.70 = 248,234.76/x
  3. Step 3: Cross multiply
    449,438.76x = 620,228.70 × 248,234.76
  4. Step 4: Simplify right side
    449,438.76x = 153,962,322,489.61
  5. Step 5: Solve for x
    x = 153,962,322,489.61/449,438.76
  6. Step 6: Final answer
    x = 342,565.74

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Half scale
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Double scale
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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.