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Finding the Fourth Proportional to 323,230.20, 484,619.88 and 143,217.72

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Solution

The fourth proportional to 323,230.20, 484,619.88 and 143,217.72 is: 214,726.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,230.20 : 484,619.88 = 143,217.72 : x
  2. Step 2: Convert to fraction form
    323,230.20/484,619.88 = 143,217.72/x
  3. Step 3: Cross multiply
    323,230.20x = 484,619.88 × 143,217.72
  4. Step 4: Simplify right side
    323,230.20x = 69,406,154,280.27
  5. Step 5: Solve for x
    x = 69,406,154,280.27/323,230.20
  6. Step 6: Final answer
    x = 214,726.70

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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.