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Finding the Fourth Proportional to 398,240.89, 597,002.63 and 145,343.93

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Solution

The fourth proportional to 398,240.89, 597,002.63 and 145,343.93 is: 217,884.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,240.89 : 597,002.63 = 145,343.93 : x
  2. Step 2: Convert to fraction form
    398,240.89/597,002.63 = 145,343.93/x
  3. Step 3: Cross multiply
    398,240.89x = 597,002.63 × 145,343.93
  4. Step 4: Simplify right side
    398,240.89x = 86,770,704,752.80
  5. Step 5: Solve for x
    x = 86,770,704,752.80/398,240.89
  6. Step 6: Final answer
    x = 217,884.97

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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.