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Finding the Fourth Proportional to 520,522.20, 780,200.10 and 220,951.80

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Solution

The fourth proportional to 520,522.20, 780,200.10 and 220,951.80 is: 331,180.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,522.20 : 780,200.10 = 220,951.80 : x
  2. Step 2: Convert to fraction form
    520,522.20/780,200.10 = 220,951.80/x
  3. Step 3: Cross multiply
    520,522.20x = 780,200.10 × 220,951.80
  4. Step 4: Simplify right side
    520,522.20x = 172,386,616,455.18
  5. Step 5: Solve for x
    x = 172,386,616,455.18/520,522.20
  6. Step 6: Final answer
    x = 331,180.14

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1.5x scale

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.