Home / 391,549,725.92-540,327,839.13-215,337,785.37

Finding the Fourth Proportional to 391,549,725.92, 540,327,839.13 and 215,337,785.37

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Solution

The fourth proportional to 391,549,725.92, 540,327,839.13 and 215,337,785.37 is: 297,160,213.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,549,725.92 : 540,327,839.13 = 215,337,785.37 : x
  2. Step 2: Convert to fraction form
    391,549,725.92/540,327,839.13 = 215,337,785.37/x
  3. Step 3: Cross multiply
    391,549,725.92x = 540,327,839.13 × 215,337,785.37
  4. Step 4: Simplify right side
    391,549,725.92x = 116,353,000,252,011,824
  5. Step 5: Solve for x
    x = 116,353,000,252,011,824/391,549,725.92
  6. Step 6: Final answer
    x = 297,160,213.76

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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.