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Finding the Fourth Proportional to 317,893.34, 438,691.07 and 172,697.97

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Solution

The fourth proportional to 317,893.34, 438,691.07 and 172,697.97 is: 238,322.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,893.34 : 438,691.07 = 172,697.97 : x
  2. Step 2: Convert to fraction form
    317,893.34/438,691.07 = 172,697.97/x
  3. Step 3: Cross multiply
    317,893.34x = 438,691.07 × 172,697.97
  4. Step 4: Simplify right side
    317,893.34x = 75,761,056,382.64
  5. Step 5: Solve for x
    x = 75,761,056,382.64/317,893.34
  6. Step 6: Final answer
    x = 238,322.25

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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.