Home / 391,853,445.19-540,635,995.43-222,279,756.26

Finding the Fourth Proportional to 391,853,445.19, 540,635,995.43 and 222,279,756.26

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Solution

The fourth proportional to 391,853,445.19, 540,635,995.43 and 222,279,756.26 is: 306,676,995.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,853,445.19 : 540,635,995.43 = 222,279,756.26 : x
  2. Step 2: Convert to fraction form
    391,853,445.19/540,635,995.43 = 222,279,756.26/x
  3. Step 3: Cross multiply
    391,853,445.19x = 540,635,995.43 × 222,279,756.26
  4. Step 4: Simplify right side
    391,853,445.19x = 120,172,437,286,581,856
  5. Step 5: Solve for x
    x = 120,172,437,286,581,856/391,853,445.19
  6. Step 6: Final answer
    x = 306,676,995.60

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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.