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Finding the Fourth Proportional to 265,418.55, 398,125.35 and 107,609.49

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Solution

The fourth proportional to 265,418.55, 398,125.35 and 107,609.49 is: 161,413.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,418.55 : 398,125.35 = 107,609.49 : x
  2. Step 2: Convert to fraction form
    265,418.55/398,125.35 = 107,609.49/x
  3. Step 3: Cross multiply
    265,418.55x = 398,125.35 × 107,609.49
  4. Step 4: Simplify right side
    265,418.55x = 42,842,065,869.57
  5. Step 5: Solve for x
    x = 42,842,065,869.57/265,418.55
  6. Step 6: Final answer
    x = 161,413.23

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.