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Finding the Fourth Proportional to 315,754.55, 435,736.19 and 172,511.52

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Solution

The fourth proportional to 315,754.55, 435,736.19 and 172,511.52 is: 238,063.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,754.55 : 435,736.19 = 172,511.52 : x
  2. Step 2: Convert to fraction form
    315,754.55/435,736.19 = 172,511.52/x
  3. Step 3: Cross multiply
    315,754.55x = 435,736.19 × 172,511.52
  4. Step 4: Simplify right side
    315,754.55x = 75,169,511,593.35
  5. Step 5: Solve for x
    x = 75,169,511,593.35/315,754.55
  6. Step 6: Final answer
    x = 238,063.12

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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.