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Finding the Fourth Proportional to 247,265.70, 370,606.95 and 128,876.10

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Solution

The fourth proportional to 247,265.70, 370,606.95 and 128,876.10 is: 193,162.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,265.70 : 370,606.95 = 128,876.10 : x
  2. Step 2: Convert to fraction form
    247,265.70/370,606.95 = 128,876.10/x
  3. Step 3: Cross multiply
    247,265.70x = 370,606.95 × 128,876.10
  4. Step 4: Simplify right side
    247,265.70x = 47,762,378,348.90
  5. Step 5: Solve for x
    x = 47,762,378,348.90/247,265.70
  6. Step 6: Final answer
    x = 193,162.17

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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.