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Finding the Fourth Proportional to 480,793.32, 721,293.02 and 143,860.20

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Solution

The fourth proportional to 480,793.32, 721,293.02 and 143,860.20 is: 215,821.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,793.32 : 721,293.02 = 143,860.20 : x
  2. Step 2: Convert to fraction form
    480,793.32/721,293.02 = 143,860.20/x
  3. Step 3: Cross multiply
    480,793.32x = 721,293.02 × 143,860.20
  4. Step 4: Simplify right side
    480,793.32x = 103,765,358,115.80
  5. Step 5: Solve for x
    x = 103,765,358,115.80/480,793.32
  6. Step 6: Final answer
    x = 215,821.13

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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.