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Finding the Fourth Proportional to 165,218.73, 247,828.28 and 45,276.71

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Solution

The fourth proportional to 165,218.73, 247,828.28 and 45,276.71 is: 67,915.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,218.73 : 247,828.28 = 45,276.71 : x
  2. Step 2: Convert to fraction form
    165,218.73/247,828.28 = 45,276.71/x
  3. Step 3: Cross multiply
    165,218.73x = 247,828.28 × 45,276.71
  4. Step 4: Simplify right side
    165,218.73x = 11,220,847,697.83
  5. Step 5: Solve for x
    x = 11,220,847,697.83/165,218.73
  6. Step 6: Final answer
    x = 67,915.11

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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.