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Finding the Fourth Proportional to 314,852.80, 472,279.20 and 115,179.70

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Solution

The fourth proportional to 314,852.80, 472,279.20 and 115,179.70 is: 172,769.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    314,852.80 : 472,279.20 = 115,179.70 : x
  2. Step 2: Convert to fraction form
    314,852.80/472,279.20 = 115,179.70/x
  3. Step 3: Cross multiply
    314,852.80x = 472,279.20 × 115,179.70
  4. Step 4: Simplify right side
    314,852.80x = 54,396,976,572.24
  5. Step 5: Solve for x
    x = 54,396,976,572.24/314,852.80
  6. Step 6: Final answer
    x = 172,769.55

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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.