Home / 422,721.13-583,341.60-231,730.42

Finding the Fourth Proportional to 422,721.13, 583,341.60 and 231,730.42

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Solution

The fourth proportional to 422,721.13, 583,341.60 and 231,730.42 is: 319,780.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,721.13 : 583,341.60 = 231,730.42 : x
  2. Step 2: Convert to fraction form
    422,721.13/583,341.60 = 231,730.42/x
  3. Step 3: Cross multiply
    422,721.13x = 583,341.60 × 231,730.42
  4. Step 4: Simplify right side
    422,721.13x = 135,177,993,971.47
  5. Step 5: Solve for x
    x = 135,177,993,971.47/422,721.13
  6. Step 6: Final answer
    x = 319,780.55

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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.