Home / 279,249.10-418,864.73-89,708.70

Finding the Fourth Proportional to 279,249.10, 418,864.73 and 89,708.70

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Solution

The fourth proportional to 279,249.10, 418,864.73 and 89,708.70 is: 134,560.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,249.10 : 418,864.73 = 89,708.70 : x
  2. Step 2: Convert to fraction form
    279,249.10/418,864.73 = 89,708.70/x
  3. Step 3: Cross multiply
    279,249.10x = 418,864.73 × 89,708.70
  4. Step 4: Simplify right side
    279,249.10x = 37,575,808,534.10
  5. Step 5: Solve for x
    x = 37,575,808,534.10/279,249.10
  6. Step 6: Final answer
    x = 134,560.18

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.