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Finding the Fourth Proportional to 418,443.31, 577,478.60 and 234,699.13

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Solution

The fourth proportional to 418,443.31, 577,478.60 and 234,699.13 is: 323,899.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,443.31 : 577,478.60 = 234,699.13 : x
  2. Step 2: Convert to fraction form
    418,443.31/577,478.60 = 234,699.13/x
  3. Step 3: Cross multiply
    418,443.31x = 577,478.60 × 234,699.13
  4. Step 4: Simplify right side
    418,443.31x = 135,533,725,013.62
  5. Step 5: Solve for x
    x = 135,533,725,013.62/418,443.31
  6. Step 6: Final answer
    x = 323,899.85

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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.