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Finding the Fourth Proportional to 354,502.40, 531,753.60 and 340,724.30

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Solution

The fourth proportional to 354,502.40, 531,753.60 and 340,724.30 is: 511,086.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,502.40 : 531,753.60 = 340,724.30 : x
  2. Step 2: Convert to fraction form
    354,502.40/531,753.60 = 340,724.30/x
  3. Step 3: Cross multiply
    354,502.40x = 531,753.60 × 340,724.30
  4. Step 4: Simplify right side
    354,502.40x = 181,181,373,132.48
  5. Step 5: Solve for x
    x = 181,181,373,132.48/354,502.40
  6. Step 6: Final answer
    x = 511,086.45

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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.