Home / 421,521.91-581,704.82-230,531.20

Finding the Fourth Proportional to 421,521.91, 581,704.82 and 230,531.20

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Solution

The fourth proportional to 421,521.91, 581,704.82 and 230,531.20 is: 318,135.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,521.91 : 581,704.82 = 230,531.20 : x
  2. Step 2: Convert to fraction form
    421,521.91/581,704.82 = 230,531.20/x
  3. Step 3: Cross multiply
    421,521.91x = 581,704.82 × 230,531.20
  4. Step 4: Simplify right side
    421,521.91x = 134,101,107,291.86
  5. Step 5: Solve for x
    x = 134,101,107,291.86/421,521.91
  6. Step 6: Final answer
    x = 318,135.56

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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.