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Finding the Fourth Proportional to 520,200.20, 780,300.29 and 146,223.20

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Solution

The fourth proportional to 520,200.20, 780,300.29 and 146,223.20 is: 219,334.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,200.20 : 780,300.29 = 146,223.20 : x
  2. Step 2: Convert to fraction form
    520,200.20/780,300.29 = 146,223.20/x
  3. Step 3: Cross multiply
    520,200.20x = 780,300.29 × 146,223.20
  4. Step 4: Simplify right side
    520,200.20x = 114,098,000,732.11
  5. Step 5: Solve for x
    x = 114,098,000,732.11/520,200.20
  6. Step 6: Final answer
    x = 219,334.79

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Double scale
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Similar ratio
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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.