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Finding the Fourth Proportional to 281,316.52, 421,831.20 and 91,654.92

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Solution

The fourth proportional to 281,316.52, 421,831.20 and 91,654.92 is: 137,435.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,316.52 : 421,831.20 = 91,654.92 : x
  2. Step 2: Convert to fraction form
    281,316.52/421,831.20 = 91,654.92/x
  3. Step 3: Cross multiply
    281,316.52x = 421,831.20 × 91,654.92
  4. Step 4: Simplify right side
    281,316.52x = 38,662,904,889.50
  5. Step 5: Solve for x
    x = 38,662,904,889.50/281,316.52
  6. Step 6: Final answer
    x = 137,435.60

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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.