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Finding the Fourth Proportional to 315,751.55, 435,732.05 and 172,508.52

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Solution

The fourth proportional to 315,751.55, 435,732.05 and 172,508.52 is: 238,058.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,751.55 : 435,732.05 = 172,508.52 : x
  2. Step 2: Convert to fraction form
    315,751.55/435,732.05 = 172,508.52/x
  3. Step 3: Cross multiply
    315,751.55x = 435,732.05 × 172,508.52
  4. Step 4: Simplify right side
    315,751.55x = 75,167,490,199.52
  5. Step 5: Solve for x
    x = 75,167,490,199.52/315,751.55
  6. Step 6: Final answer
    x = 238,058.98

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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.