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Finding the Fourth Proportional to 438,838.64, 658,121.88 and 158,319.44

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Solution

The fourth proportional to 438,838.64, 658,121.88 and 158,319.44 is: 237,430.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,838.64 : 658,121.88 = 158,319.44 : x
  2. Step 2: Convert to fraction form
    438,838.64/658,121.88 = 158,319.44/x
  3. Step 3: Cross multiply
    438,838.64x = 658,121.88 × 158,319.44
  4. Step 4: Simplify right side
    438,838.64x = 104,193,487,493.35
  5. Step 5: Solve for x
    x = 104,193,487,493.35/438,838.64
  6. Step 6: Final answer
    x = 237,430.07

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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.