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Finding the Fourth Proportional to 485,320.88, 669,713.40 and 267,520.05

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Solution

The fourth proportional to 485,320.88, 669,713.40 and 267,520.05 is: 369,161.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,320.88 : 669,713.40 = 267,520.05 : x
  2. Step 2: Convert to fraction form
    485,320.88/669,713.40 = 267,520.05/x
  3. Step 3: Cross multiply
    485,320.88x = 669,713.40 × 267,520.05
  4. Step 4: Simplify right side
    485,320.88x = 179,161,762,253.67
  5. Step 5: Solve for x
    x = 179,161,762,253.67/485,320.88
  6. Step 6: Final answer
    x = 369,161.45

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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.