Home / 391,192.74-539,859.26-219,118.10

Finding the Fourth Proportional to 391,192.74, 539,859.26 and 219,118.10

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Solution

The fourth proportional to 391,192.74, 539,859.26 and 219,118.10 is: 302,390.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,192.74 : 539,859.26 = 219,118.10 : x
  2. Step 2: Convert to fraction form
    391,192.74/539,859.26 = 219,118.10/x
  3. Step 3: Cross multiply
    391,192.74x = 539,859.26 × 219,118.10
  4. Step 4: Simplify right side
    391,192.74x = 118,292,933,167.11
  5. Step 5: Solve for x
    x = 118,292,933,167.11/391,192.74
  6. Step 6: Final answer
    x = 302,390.41

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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.