Home / 218,934.30-328,397.26-76,740.12

Finding the Fourth Proportional to 218,934.30, 328,397.26 and 76,740.12

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Solution

The fourth proportional to 218,934.30, 328,397.26 and 76,740.12 is: 115,108.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,934.30 : 328,397.26 = 76,740.12 : x
  2. Step 2: Convert to fraction form
    218,934.30/328,397.26 = 76,740.12/x
  3. Step 3: Cross multiply
    218,934.30x = 328,397.26 × 76,740.12
  4. Step 4: Simplify right side
    218,934.30x = 25,201,245,140.07
  5. Step 5: Solve for x
    x = 25,201,245,140.07/218,934.30
  6. Step 6: Final answer
    x = 115,108.71

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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.