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Finding the Fourth Proportional to 438,373.26, 656,978.58 and 225,132.57

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Solution

The fourth proportional to 438,373.26, 656,978.58 and 225,132.57 is: 337,400.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,373.26 : 656,978.58 = 225,132.57 : x
  2. Step 2: Convert to fraction form
    438,373.26/656,978.58 = 225,132.57/x
  3. Step 3: Cross multiply
    438,373.26x = 656,978.58 × 225,132.57
  4. Step 4: Simplify right side
    438,373.26x = 147,907,276,150.35
  5. Step 5: Solve for x
    x = 147,907,276,150.35/438,373.26
  6. Step 6: Final answer
    x = 337,400.32

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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.