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Finding the Fourth Proportional to 485,033.78, 669,257.91 and 270,168.38

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Solution

The fourth proportional to 485,033.78, 669,257.91 and 270,168.38 is: 372,782.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,033.78 : 669,257.91 = 270,168.38 : x
  2. Step 2: Convert to fraction form
    485,033.78/669,257.91 = 270,168.38/x
  3. Step 3: Cross multiply
    485,033.78x = 669,257.91 × 270,168.38
  4. Step 4: Simplify right side
    485,033.78x = 180,812,325,346.89
  5. Step 5: Solve for x
    x = 180,812,325,346.89/485,033.78
  6. Step 6: Final answer
    x = 372,782.95

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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.