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Finding the Fourth Proportional to 312,487.29, 468,731.52 and 112,948.56

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Solution

The fourth proportional to 312,487.29, 468,731.52 and 112,948.56 is: 169,423.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,487.29 : 468,731.52 = 112,948.56 : x
  2. Step 2: Convert to fraction form
    312,487.29/468,731.52 = 112,948.56/x
  3. Step 3: Cross multiply
    312,487.29x = 468,731.52 × 112,948.56
  4. Step 4: Simplify right side
    312,487.29x = 52,942,550,210.61
  5. Step 5: Solve for x
    x = 52,942,550,210.61/312,487.29
  6. Step 6: Final answer
    x = 169,423.05

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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.