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Finding the Fourth Proportional to 363,484.31, 545,187.56 and 126,831.47

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Solution

The fourth proportional to 363,484.31, 545,187.56 and 126,831.47 is: 190,233.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    363,484.31 : 545,187.56 = 126,831.47 : x
  2. Step 2: Convert to fraction form
    363,484.31/545,187.56 = 126,831.47/x
  3. Step 3: Cross multiply
    363,484.31x = 545,187.56 × 126,831.47
  4. Step 4: Simplify right side
    363,484.31x = 69,146,936,300.42
  5. Step 5: Solve for x
    x = 69,146,936,300.42/363,484.31
  6. Step 6: Final answer
    x = 190,233.62

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.