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Finding the Fourth Proportional to 225,515.13, 311,211.48 and 124,913.13

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Solution

The fourth proportional to 225,515.13, 311,211.48 and 124,913.13 is: 172,380.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,515.13 : 311,211.48 = 124,913.13 : x
  2. Step 2: Convert to fraction form
    225,515.13/311,211.48 = 124,913.13/x
  3. Step 3: Cross multiply
    225,515.13x = 311,211.48 × 124,913.13
  4. Step 4: Simplify right side
    225,515.13x = 38,874,400,058.73
  5. Step 5: Solve for x
    x = 38,874,400,058.73/225,515.13
  6. Step 6: Final answer
    x = 172,380.45

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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.