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Finding the Fourth Proportional to 509,402.20, 764,103.30 and 243,681.70

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Solution

The fourth proportional to 509,402.20, 764,103.30 and 243,681.70 is: 365,522.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,402.20 : 764,103.30 = 243,681.70 : x
  2. Step 2: Convert to fraction form
    509,402.20/764,103.30 = 243,681.70/x
  3. Step 3: Cross multiply
    509,402.20x = 764,103.30 × 243,681.70
  4. Step 4: Simplify right side
    509,402.20x = 186,197,991,119.61
  5. Step 5: Solve for x
    x = 186,197,991,119.61/509,402.20
  6. Step 6: Final answer
    x = 365,522.55

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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.