Home / 391,464,126.60-540,239,891.79-242,833,143.48

Finding the Fourth Proportional to 391,464,126.60, 540,239,891.79 and 242,833,143.48

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Solution

The fourth proportional to 391,464,126.60, 540,239,891.79 and 242,833,143.48 is: 335,121,770.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,464,126.60 : 540,239,891.79 = 242,833,143.48 : x
  2. Step 2: Convert to fraction form
    391,464,126.60/540,239,891.79 = 242,833,143.48/x
  3. Step 3: Cross multiply
    391,464,126.60x = 540,239,891.79 × 242,833,143.48
  4. Step 4: Simplify right side
    391,464,126.60x = 131,188,151,156,660,736
  5. Step 5: Solve for x
    x = 131,188,151,156,660,736/391,464,126.60
  6. Step 6: Final answer
    x = 335,121,770.41

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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.