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Finding the Fourth Proportional to 425,387.52, 587,247.36 and 329,679.36

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Solution

The fourth proportional to 425,387.52, 587,247.36 and 329,679.36 is: 455,122.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,387.52 : 587,247.36 = 329,679.36 : x
  2. Step 2: Convert to fraction form
    425,387.52/587,247.36 = 329,679.36/x
  3. Step 3: Cross multiply
    425,387.52x = 587,247.36 × 329,679.36
  4. Step 4: Simplify right side
    425,387.52x = 193,603,333,806.49
  5. Step 5: Solve for x
    x = 193,603,333,806.49/425,387.52
  6. Step 6: Final answer
    x = 455,122.27

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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.