Home / 318,972.60-478,523.70-108,631.80

Finding the Fourth Proportional to 318,972.60, 478,523.70 and 108,631.80

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Solution

The fourth proportional to 318,972.60, 478,523.70 and 108,631.80 is: 162,969.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,972.60 : 478,523.70 = 108,631.80 : x
  2. Step 2: Convert to fraction form
    318,972.60/478,523.70 = 108,631.80/x
  3. Step 3: Cross multiply
    318,972.60x = 478,523.70 × 108,631.80
  4. Step 4: Simplify right side
    318,972.60x = 51,982,890,873.66
  5. Step 5: Solve for x
    x = 51,982,890,873.66/318,972.60
  6. Step 6: Final answer
    x = 162,969.77

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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.