Home / 279,755.11-386,062.10-152,430.72

Finding the Fourth Proportional to 279,755.11, 386,062.10 and 152,430.72

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Solution

The fourth proportional to 279,755.11, 386,062.10 and 152,430.72 is: 210,354.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,755.11 : 386,062.10 = 152,430.72 : x
  2. Step 2: Convert to fraction form
    279,755.11/386,062.10 = 152,430.72/x
  3. Step 3: Cross multiply
    279,755.11x = 386,062.10 × 152,430.72
  4. Step 4: Simplify right side
    279,755.11x = 58,847,723,867.71
  5. Step 5: Solve for x
    x = 58,847,723,867.71/279,755.11
  6. Step 6: Final answer
    x = 210,354.42

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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.