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Finding the Fourth Proportional to 144,160.80, 216,240.69 and 38,979.76

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Solution

The fourth proportional to 144,160.80, 216,240.69 and 38,979.76 is: 58,469.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,160.80 : 216,240.69 = 38,979.76 : x
  2. Step 2: Convert to fraction form
    144,160.80/216,240.69 = 38,979.76/x
  3. Step 3: Cross multiply
    144,160.80x = 216,240.69 × 38,979.76
  4. Step 4: Simplify right side
    144,160.80x = 8,429,010,198.43
  5. Step 5: Solve for x
    x = 8,429,010,198.43/144,160.80
  6. Step 6: Final answer
    x = 58,469.50

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1.5x scale

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.