Home / 391,373,762.30-540,096,139.38-215,164,755.68

Finding the Fourth Proportional to 391,373,762.30, 540,096,139.38 and 215,164,755.68

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Solution

The fourth proportional to 391,373,762.30, 540,096,139.38 and 215,164,755.68 is: 296,927,553.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,373,762.30 : 540,096,139.38 = 215,164,755.68 : x
  2. Step 2: Convert to fraction form
    391,373,762.30/540,096,139.38 = 215,164,755.68/x
  3. Step 3: Cross multiply
    391,373,762.30x = 540,096,139.38 × 215,164,755.68
  4. Step 4: Simplify right side
    391,373,762.30x = 116,209,653,873,408,928
  5. Step 5: Solve for x
    x = 116,209,653,873,408,928/391,373,762.30
  6. Step 6: Final answer
    x = 296,927,553.83

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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.