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Finding the Fourth Proportional to 225,087.85, 310,648.02 and 129,613.15

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Solution

The fourth proportional to 225,087.85, 310,648.02 and 129,613.15 is: 178,881.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,087.85 : 310,648.02 = 129,613.15 : x
  2. Step 2: Convert to fraction form
    225,087.85/310,648.02 = 129,613.15/x
  3. Step 3: Cross multiply
    225,087.85x = 310,648.02 × 129,613.15
  4. Step 4: Simplify right side
    225,087.85x = 40,264,068,413.46
  5. Step 5: Solve for x
    x = 40,264,068,413.46/225,087.85
  6. Step 6: Final answer
    x = 178,881.57

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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.