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Finding the Fourth Proportional to 485,177.96, 669,543.90 and 270,320.60

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Solution

The fourth proportional to 485,177.96, 669,543.90 and 270,320.60 is: 373,041.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,177.96 : 669,543.90 = 270,320.60 : x
  2. Step 2: Convert to fraction form
    485,177.96/669,543.90 = 270,320.60/x
  3. Step 3: Cross multiply
    485,177.96x = 669,543.90 × 270,320.60
  4. Step 4: Simplify right side
    485,177.96x = 180,991,508,774.34
  5. Step 5: Solve for x
    x = 180,991,508,774.34/485,177.96
  6. Step 6: Final answer
    x = 373,041.49

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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.