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Finding the Fourth Proportional to 485,297.35, 669,715.20 and 267,513.75

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Solution

The fourth proportional to 485,297.35, 669,715.20 and 267,513.75 is: 369,171.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,297.35 : 669,715.20 = 267,513.75 : x
  2. Step 2: Convert to fraction form
    485,297.35/669,715.20 = 267,513.75/x
  3. Step 3: Cross multiply
    485,297.35x = 669,715.20 × 267,513.75
  4. Step 4: Simplify right side
    485,297.35x = 179,158,024,584
  5. Step 5: Solve for x
    x = 179,158,024,584/485,297.35
  6. Step 6: Final answer
    x = 369,171.65

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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.