Home / 431,941.21-648,108.74-221,726.89

Finding the Fourth Proportional to 431,941.21, 648,108.74 and 221,726.89

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Solution

The fourth proportional to 431,941.21, 648,108.74 and 221,726.89 is: 332,691.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,941.21 : 648,108.74 = 221,726.89 : x
  2. Step 2: Convert to fraction form
    431,941.21/648,108.74 = 221,726.89/x
  3. Step 3: Cross multiply
    431,941.21x = 648,108.74 × 221,726.89
  4. Step 4: Simplify right side
    431,941.21x = 143,703,135,302.02
  5. Step 5: Solve for x
    x = 143,703,135,302.02/431,941.21
  6. Step 6: Final answer
    x = 332,691.42

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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.