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Finding the Fourth Proportional to 485,704.60, 670,272.98 and 267,908.38

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Solution

The fourth proportional to 485,704.60, 670,272.98 and 267,908.38 is: 369,713.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,704.60 : 670,272.98 = 267,908.38 : x
  2. Step 2: Convert to fraction form
    485,704.60/670,272.98 = 267,908.38/x
  3. Step 3: Cross multiply
    485,704.60x = 670,272.98 × 267,908.38
  4. Step 4: Simplify right side
    485,704.60x = 179,571,745,214.35
  5. Step 5: Solve for x
    x = 179,571,745,214.35/485,704.60
  6. Step 6: Final answer
    x = 369,713.91

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1.5x scale

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.