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Finding the Fourth Proportional to 222,909.38, 307,608.90 and 135,661.70

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Solution

The fourth proportional to 222,909.38, 307,608.90 and 135,661.70 is: 187,209.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,909.38 : 307,608.90 = 135,661.70 : x
  2. Step 2: Convert to fraction form
    222,909.38/307,608.90 = 135,661.70/x
  3. Step 3: Cross multiply
    222,909.38x = 307,608.90 × 135,661.70
  4. Step 4: Simplify right side
    222,909.38x = 41,730,746,309.13
  5. Step 5: Solve for x
    x = 41,730,746,309.13/222,909.38
  6. Step 6: Final answer
    x = 187,209.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.