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Finding the Fourth Proportional to 407,247.52, 560,008.67 and 353,439.12

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Solution

The fourth proportional to 407,247.52, 560,008.67 and 353,439.12 is: 486,016.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,247.52 : 560,008.67 = 353,439.12 : x
  2. Step 2: Convert to fraction form
    407,247.52/560,008.67 = 353,439.12/x
  3. Step 3: Cross multiply
    407,247.52x = 560,008.67 × 353,439.12
  4. Step 4: Simplify right side
    407,247.52x = 197,928,969,749.98
  5. Step 5: Solve for x
    x = 197,928,969,749.98/407,247.52
  6. Step 6: Final answer
    x = 486,016.39

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.