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Finding the Fourth Proportional to 438,767.20, 658,014.60 and 158,248

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Solution

The fourth proportional to 438,767.20, 658,014.60 and 158,248 is: 237,322.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,767.20 : 658,014.60 = 158,248 : x
  2. Step 2: Convert to fraction form
    438,767.20/658,014.60 = 158,248/x
  3. Step 3: Cross multiply
    438,767.20x = 658,014.60 × 158,248
  4. Step 4: Simplify right side
    438,767.20x = 104,129,494,420.80
  5. Step 5: Solve for x
    x = 104,129,494,420.80/438,767.20
  6. Step 6: Final answer
    x = 237,322.88

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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.