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Finding the Fourth Proportional to 247,138.76, 370,708.16 and 89,330.31

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Solution

The fourth proportional to 247,138.76, 370,708.16 and 89,330.31 is: 133,995.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,138.76 : 370,708.16 = 89,330.31 : x
  2. Step 2: Convert to fraction form
    247,138.76/370,708.16 = 89,330.31/x
  3. Step 3: Cross multiply
    247,138.76x = 370,708.16 × 89,330.31
  4. Step 4: Simplify right side
    247,138.76x = 33,115,474,405.68
  5. Step 5: Solve for x
    x = 33,115,474,405.68/247,138.76
  6. Step 6: Final answer
    x = 133,995.47

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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.