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Finding the Fourth Proportional to 398,614.20, 597,623.70 and 240,809.40

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Solution

The fourth proportional to 398,614.20, 597,623.70 and 240,809.40 is: 361,034.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,614.20 : 597,623.70 = 240,809.40 : x
  2. Step 2: Convert to fraction form
    398,614.20/597,623.70 = 240,809.40/x
  3. Step 3: Cross multiply
    398,614.20x = 597,623.70 × 240,809.40
  4. Step 4: Simplify right side
    398,614.20x = 143,913,404,622.78
  5. Step 5: Solve for x
    x = 143,913,404,622.78/398,614.20
  6. Step 6: Final answer
    x = 361,034.31

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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.