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Finding the Fourth Proportional to 485,217.72, 669,591.54 and 270,353.16

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Solution

The fourth proportional to 485,217.72, 669,591.54 and 270,353.16 is: 373,082.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,217.72 : 669,591.54 = 270,353.16 : x
  2. Step 2: Convert to fraction form
    485,217.72/669,591.54 = 270,353.16/x
  3. Step 3: Cross multiply
    485,217.72x = 669,591.54 × 270,353.16
  4. Step 4: Simplify right side
    485,217.72x = 181,026,188,748.27
  5. Step 5: Solve for x
    x = 181,026,188,748.27/485,217.72
  6. Step 6: Final answer
    x = 373,082.39

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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.