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Finding the Fourth Proportional to 265,615.11, 398,547 and 132,505.65

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Solution

The fourth proportional to 265,615.11, 398,547 and 132,505.65 is: 198,820.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,615.11 : 398,547 = 132,505.65 : x
  2. Step 2: Convert to fraction form
    265,615.11/398,547 = 132,505.65/x
  3. Step 3: Cross multiply
    265,615.11x = 398,547 × 132,505.65
  4. Step 4: Simplify right side
    265,615.11x = 52,809,729,290.55
  5. Step 5: Solve for x
    x = 52,809,729,290.55/265,615.11
  6. Step 6: Final answer
    x = 198,820.50

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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.