Home / 498,311.20-747,345.30-143,288.20

Finding the Fourth Proportional to 498,311.20, 747,345.30 and 143,288.20

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Solution

The fourth proportional to 498,311.20, 747,345.30 and 143,288.20 is: 214,897.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,311.20 : 747,345.30 = 143,288.20 : x
  2. Step 2: Convert to fraction form
    498,311.20/747,345.30 = 143,288.20/x
  3. Step 3: Cross multiply
    498,311.20x = 747,345.30 × 143,288.20
  4. Step 4: Simplify right side
    498,311.20x = 107,085,762,815.46
  5. Step 5: Solve for x
    x = 107,085,762,815.46/498,311.20
  6. Step 6: Final answer
    x = 214,897.36

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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.