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Finding the Fourth Proportional to 535,079.96, 738,155.94 and 320,176.76

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Solution

The fourth proportional to 535,079.96, 738,155.94 and 320,176.76 is: 441,691.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    535,079.96 : 738,155.94 = 320,176.76 : x
  2. Step 2: Convert to fraction form
    535,079.96/738,155.94 = 320,176.76/x
  3. Step 3: Cross multiply
    535,079.96x = 738,155.94 × 320,176.76
  4. Step 4: Simplify right side
    535,079.96x = 236,340,377,243.95
  5. Step 5: Solve for x
    x = 236,340,377,243.95/535,079.96
  6. Step 6: Final answer
    x = 441,691.70

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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.