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Finding the Fourth Proportional to 207,984.70, 312,305.10 and 119,411.20

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Solution

The fourth proportional to 207,984.70, 312,305.10 and 119,411.20 is: 179,305.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,984.70 : 312,305.10 = 119,411.20 : x
  2. Step 2: Convert to fraction form
    207,984.70/312,305.10 = 119,411.20/x
  3. Step 3: Cross multiply
    207,984.70x = 312,305.10 × 119,411.20
  4. Step 4: Simplify right side
    207,984.70x = 37,292,726,757.12
  5. Step 5: Solve for x
    x = 37,292,726,757.12/207,984.70
  6. Step 6: Final answer
    x = 179,305.14

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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.