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Finding the Fourth Proportional to 586,979.20, 880,468.80 and 143,747.20

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Solution

The fourth proportional to 586,979.20, 880,468.80 and 143,747.20 is: 215,620.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    586,979.20 : 880,468.80 = 143,747.20 : x
  2. Step 2: Convert to fraction form
    586,979.20/880,468.80 = 143,747.20/x
  3. Step 3: Cross multiply
    586,979.20x = 880,468.80 × 143,747.20
  4. Step 4: Simplify right side
    586,979.20x = 126,564,924,687.36
  5. Step 5: Solve for x
    x = 126,564,924,687.36/586,979.20
  6. Step 6: Final answer
    x = 215,620.80

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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.