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Finding the Fourth Proportional to 315,488.52, 435,370.86 and 172,248.12

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Solution

The fourth proportional to 315,488.52, 435,370.86 and 172,248.12 is: 237,700.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,488.52 : 435,370.86 = 172,248.12 : x
  2. Step 2: Convert to fraction form
    315,488.52/435,370.86 = 172,248.12/x
  3. Step 3: Cross multiply
    315,488.52x = 435,370.86 × 172,248.12
  4. Step 4: Simplify right side
    315,488.52x = 74,991,812,137.78
  5. Step 5: Solve for x
    x = 74,991,812,137.78/315,488.52
  6. Step 6: Final answer
    x = 237,700.61

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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.