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Finding the Fourth Proportional to 226,310.74, 312,309 and 124,342.78

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Solution

The fourth proportional to 226,310.74, 312,309 and 124,342.78 is: 171,593.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    226,310.74 : 312,309 = 124,342.78 : x
  2. Step 2: Convert to fraction form
    226,310.74/312,309 = 124,342.78/x
  3. Step 3: Cross multiply
    226,310.74x = 312,309 × 124,342.78
  4. Step 4: Simplify right side
    226,310.74x = 38,833,369,279.02
  5. Step 5: Solve for x
    x = 38,833,369,279.02/226,310.74
  6. Step 6: Final answer
    x = 171,593.13

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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.