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Finding the Fourth Proportional to 398,551.60, 598,859.88 and 299,644.12

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Solution

The fourth proportional to 398,551.60, 598,859.88 and 299,644.12 is: 450,242.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,551.60 : 598,859.88 = 299,644.12 : x
  2. Step 2: Convert to fraction form
    398,551.60/598,859.88 = 299,644.12/x
  3. Step 3: Cross multiply
    398,551.60x = 598,859.88 × 299,644.12
  4. Step 4: Simplify right side
    398,551.60x = 179,444,841,745.91
  5. Step 5: Solve for x
    x = 179,444,841,745.91/398,551.60
  6. Step 6: Final answer
    x = 450,242.43

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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.