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Finding the Fourth Proportional to 225,988, 311,862.60 and 124,015.18

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Solution

The fourth proportional to 225,988, 311,862.60 and 124,015.18 is: 171,140.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,988 : 311,862.60 = 124,015.18 : x
  2. Step 2: Convert to fraction form
    225,988/311,862.60 = 124,015.18/x
  3. Step 3: Cross multiply
    225,988x = 311,862.60 × 124,015.18
  4. Step 4: Simplify right side
    225,988x = 38,675,696,474.27
  5. Step 5: Solve for x
    x = 38,675,696,474.27/225,988
  6. Step 6: Final answer
    x = 171,140.49

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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.