Home / 498,428.20-747,569.40-143,405.20

Finding the Fourth Proportional to 498,428.20, 747,569.40 and 143,405.20

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Solution

The fourth proportional to 498,428.20, 747,569.40 and 143,405.20 is: 215,086.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,428.20 : 747,569.40 = 143,405.20 : x
  2. Step 2: Convert to fraction form
    498,428.20/747,569.40 = 143,405.20/x
  3. Step 3: Cross multiply
    498,428.20x = 747,569.40 × 143,405.20
  4. Step 4: Simplify right side
    498,428.20x = 107,205,339,320.88
  5. Step 5: Solve for x
    x = 107,205,339,320.88/498,428.20
  6. Step 6: Final answer
    x = 215,086.83

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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.