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Finding the Fourth Proportional to 306,892.40, 459,042.60 and 275,529.20

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Solution

The fourth proportional to 306,892.40, 459,042.60 and 275,529.20 is: 412,130.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,892.40 : 459,042.60 = 275,529.20 : x
  2. Step 2: Convert to fraction form
    306,892.40/459,042.60 = 275,529.20/x
  3. Step 3: Cross multiply
    306,892.40x = 459,042.60 × 275,529.20
  4. Step 4: Simplify right side
    306,892.40x = 126,479,640,343.92
  5. Step 5: Solve for x
    x = 126,479,640,343.92/306,892.40
  6. Step 6: Final answer
    x = 412,130.25

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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.