Home / 291,579.12-402,387.48-281,003.76

Finding the Fourth Proportional to 291,579.12, 402,387.48 and 281,003.76

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Solution

The fourth proportional to 291,579.12, 402,387.48 and 281,003.76 is: 387,793.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,579.12 : 402,387.48 = 281,003.76 : x
  2. Step 2: Convert to fraction form
    291,579.12/402,387.48 = 281,003.76/x
  3. Step 3: Cross multiply
    291,579.12x = 402,387.48 × 281,003.76
  4. Step 4: Simplify right side
    291,579.12x = 113,072,394,856.93
  5. Step 5: Solve for x
    x = 113,072,394,856.93/291,579.12
  6. Step 6: Final answer
    x = 387,793.18

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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.