Home / 421,691.80-581,941.25-230,708.38

Finding the Fourth Proportional to 421,691.80, 581,941.25 and 230,708.38

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Solution

The fourth proportional to 421,691.80, 581,941.25 and 230,708.38 is: 318,381.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,691.80 : 581,941.25 = 230,708.38 : x
  2. Step 2: Convert to fraction form
    421,691.80/581,941.25 = 230,708.38/x
  3. Step 3: Cross multiply
    421,691.80x = 581,941.25 × 230,708.38
  4. Step 4: Simplify right side
    421,691.80x = 134,258,723,042.68
  5. Step 5: Solve for x
    x = 134,258,723,042.68/421,691.80
  6. Step 6: Final answer
    x = 318,381.16

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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.