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Finding the Fourth Proportional to 316,183.68, 474,275.52 and 129,195

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Solution

The fourth proportional to 316,183.68, 474,275.52 and 129,195 is: 193,792.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,183.68 : 474,275.52 = 129,195 : x
  2. Step 2: Convert to fraction form
    316,183.68/474,275.52 = 129,195/x
  3. Step 3: Cross multiply
    316,183.68x = 474,275.52 × 129,195
  4. Step 4: Simplify right side
    316,183.68x = 61,274,025,806.40
  5. Step 5: Solve for x
    x = 61,274,025,806.40/316,183.68
  6. Step 6: Final answer
    x = 193,792.50

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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.