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Finding the Fourth Proportional to 415,435.92, 573,318.28 and 234,155.40

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Solution

The fourth proportional to 415,435.92, 573,318.28 and 234,155.40 is: 323,143.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,435.92 : 573,318.28 = 234,155.40 : x
  2. Step 2: Convert to fraction form
    415,435.92/573,318.28 = 234,155.40/x
  3. Step 3: Cross multiply
    415,435.92x = 573,318.28 × 234,155.40
  4. Step 4: Simplify right side
    415,435.92x = 134,245,571,180.71
  5. Step 5: Solve for x
    x = 134,245,571,180.71/415,435.92
  6. Step 6: Final answer
    x = 323,143.87

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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.