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Finding the Fourth Proportional to 435,487.20, 653,230.80 and 323,512.80

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Solution

The fourth proportional to 435,487.20, 653,230.80 and 323,512.80 is: 485,269.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    435,487.20 : 653,230.80 = 323,512.80 : x
  2. Step 2: Convert to fraction form
    435,487.20/653,230.80 = 323,512.80/x
  3. Step 3: Cross multiply
    435,487.20x = 653,230.80 × 323,512.80
  4. Step 4: Simplify right side
    435,487.20x = 211,328,525,154.24
  5. Step 5: Solve for x
    x = 211,328,525,154.24/435,487.20
  6. Step 6: Final answer
    x = 485,269.20

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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.