Home / 391,727,229-540,583,558.19-215,511,444.15

Finding the Fourth Proportional to 391,727,229, 540,583,558.19 and 215,511,444.15

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Solution

The fourth proportional to 391,727,229, 540,583,558.19 and 215,511,444.15 is: 297,405,783.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,727,229 : 540,583,558.19 = 215,511,444.15 : x
  2. Step 2: Convert to fraction form
    391,727,229/540,583,558.19 = 215,511,444.15/x
  3. Step 3: Cross multiply
    391,727,229x = 540,583,558.19 × 215,511,444.15
  4. Step 4: Simplify right side
    391,727,229x = 116,501,943,309,272,480
  5. Step 5: Solve for x
    x = 116,501,943,309,272,480/391,727,229
  6. Step 6: Final answer
    x = 297,405,783.12

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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.