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Finding the Fourth Proportional to 323,491.70, 485,151.15 and 98,851.70

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Solution

The fourth proportional to 323,491.70, 485,151.15 and 98,851.70 is: 148,251.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,491.70 : 485,151.15 = 98,851.70 : x
  2. Step 2: Convert to fraction form
    323,491.70/485,151.15 = 98,851.70/x
  3. Step 3: Cross multiply
    323,491.70x = 485,151.15 × 98,851.70
  4. Step 4: Simplify right side
    323,491.70x = 47,958,015,934.46
  5. Step 5: Solve for x
    x = 47,958,015,934.46/323,491.70
  6. Step 6: Final answer
    x = 148,251.15

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.