Home / 391,373,764.28-540,096,142.18-215,164,757.64

Finding the Fourth Proportional to 391,373,764.28, 540,096,142.18 and 215,164,757.64

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Solution

The fourth proportional to 391,373,764.28, 540,096,142.18 and 215,164,757.64 is: 296,927,556.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,373,764.28 : 540,096,142.18 = 215,164,757.64 : x
  2. Step 2: Convert to fraction form
    391,373,764.28/540,096,142.18 = 215,164,757.64/x
  3. Step 3: Cross multiply
    391,373,764.28x = 540,096,142.18 × 215,164,757.64
  4. Step 4: Simplify right side
    391,373,764.28x = 116,209,655,534,458,656
  5. Step 5: Solve for x
    x = 116,209,655,534,458,656/391,373,764.28
  6. Step 6: Final answer
    x = 296,927,556.57

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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.