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Finding the Fourth Proportional to 478,974.33, 718,478.46 and 119,147.04

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Solution

The fourth proportional to 478,974.33, 718,478.46 and 119,147.04 is: 178,724.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,974.33 : 718,478.46 = 119,147.04 : x
  2. Step 2: Convert to fraction form
    478,974.33/718,478.46 = 119,147.04/x
  3. Step 3: Cross multiply
    478,974.33x = 718,478.46 × 119,147.04
  4. Step 4: Simplify right side
    478,974.33x = 85,604,581,812.76
  5. Step 5: Solve for x
    x = 85,604,581,812.76/478,974.33
  6. Step 6: Final answer
    x = 178,724.78

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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.