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Finding the Fourth Proportional to 315,766.80, 435,757.43 and 172,527.93

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Solution

The fourth proportional to 315,766.80, 435,757.43 and 172,527.93 is: 238,088.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,766.80 : 435,757.43 = 172,527.93 : x
  2. Step 2: Convert to fraction form
    315,766.80/435,757.43 = 172,527.93/x
  3. Step 3: Cross multiply
    315,766.80x = 435,757.43 × 172,527.93
  4. Step 4: Simplify right side
    315,766.80x = 75,180,326,517.38
  5. Step 5: Solve for x
    x = 75,180,326,517.38/315,766.80
  6. Step 6: Final answer
    x = 238,088.13

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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.