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Finding the Fourth Proportional to 306,502.60, 459,753.90 and 212,024.20

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Solution

The fourth proportional to 306,502.60, 459,753.90 and 212,024.20 is: 318,036.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,502.60 : 459,753.90 = 212,024.20 : x
  2. Step 2: Convert to fraction form
    306,502.60/459,753.90 = 212,024.20/x
  3. Step 3: Cross multiply
    306,502.60x = 459,753.90 × 212,024.20
  4. Step 4: Simplify right side
    306,502.60x = 97,478,952,844.38
  5. Step 5: Solve for x
    x = 97,478,952,844.38/306,502.60
  6. Step 6: Final answer
    x = 318,036.30

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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.