Home / 391,727,200.87-540,583,519.32-215,511,415.90

Finding the Fourth Proportional to 391,727,200.87, 540,583,519.32 and 215,511,415.90

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Solution

The fourth proportional to 391,727,200.87, 540,583,519.32 and 215,511,415.90 is: 297,405,744.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,727,200.87 : 540,583,519.32 = 215,511,415.90 : x
  2. Step 2: Convert to fraction form
    391,727,200.87/540,583,519.32 = 215,511,415.90/x
  3. Step 3: Cross multiply
    391,727,200.87x = 540,583,519.32 × 215,511,415.90
  4. Step 4: Simplify right side
    391,727,200.87x = 116,501,919,660,858,224
  5. Step 5: Solve for x
    x = 116,501,919,660,858,224/391,727,200.87
  6. Step 6: Final answer
    x = 297,405,744.10

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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.