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Finding the Fourth Proportional to 315,760.59, 435,744.47 and 172,517.55

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Solution

The fourth proportional to 315,760.59, 435,744.47 and 172,517.55 is: 238,071.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,760.59 : 435,744.47 = 172,517.55 : x
  2. Step 2: Convert to fraction form
    315,760.59/435,744.47 = 172,517.55/x
  3. Step 3: Cross multiply
    315,760.59x = 435,744.47 × 172,517.55
  4. Step 4: Simplify right side
    315,760.59x = 75,173,567,527.86
  5. Step 5: Solve for x
    x = 75,173,567,527.86/315,760.59
  6. Step 6: Final answer
    x = 238,071.41

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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.