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Finding the Fourth Proportional to 438,319.80, 657,479.70 and 267,077.70

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Solution

The fourth proportional to 438,319.80, 657,479.70 and 267,077.70 is: 400,616.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,319.80 : 657,479.70 = 267,077.70 : x
  2. Step 2: Convert to fraction form
    438,319.80/657,479.70 = 267,077.70/x
  3. Step 3: Cross multiply
    438,319.80x = 657,479.70 × 267,077.70
  4. Step 4: Simplify right side
    438,319.80x = 175,598,166,072.69
  5. Step 5: Solve for x
    x = 175,598,166,072.69/438,319.80
  6. Step 6: Final answer
    x = 400,616.55

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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.