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Finding the Fourth Proportional to 172,238.40, 256,996.80 and 148,910.40

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Solution

The fourth proportional to 172,238.40, 256,996.80 and 148,910.40 is: 222,189.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,238.40 : 256,996.80 = 148,910.40 : x
  2. Step 2: Convert to fraction form
    172,238.40/256,996.80 = 148,910.40/x
  3. Step 3: Cross multiply
    172,238.40x = 256,996.80 × 148,910.40
  4. Step 4: Simplify right side
    172,238.40x = 38,269,496,286.72
  5. Step 5: Solve for x
    x = 38,269,496,286.72/172,238.40
  6. Step 6: Final answer
    x = 222,189.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.