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Finding the Fourth Proportional to 368,789.80, 553,314.30 and 132,140.20

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Solution

The fourth proportional to 368,789.80, 553,314.30 and 132,140.20 is: 198,256.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,789.80 : 553,314.30 = 132,140.20 : x
  2. Step 2: Convert to fraction form
    368,789.80/553,314.30 = 132,140.20/x
  3. Step 3: Cross multiply
    368,789.80x = 553,314.30 × 132,140.20
  4. Step 4: Simplify right side
    368,789.80x = 73,115,062,264.86
  5. Step 5: Solve for x
    x = 73,115,062,264.86/368,789.80
  6. Step 6: Final answer
    x = 198,256.74

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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.