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Finding the Fourth Proportional to 343,854.45, 515,779.25 and 187,079.49

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Solution

The fourth proportional to 343,854.45, 515,779.25 and 187,079.49 is: 280,617.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,854.45 : 515,779.25 = 187,079.49 : x
  2. Step 2: Convert to fraction form
    343,854.45/515,779.25 = 187,079.49/x
  3. Step 3: Cross multiply
    343,854.45x = 515,779.25 × 187,079.49
  4. Step 4: Simplify right side
    343,854.45x = 96,491,718,107.19
  5. Step 5: Solve for x
    x = 96,491,718,107.19/343,854.45
  6. Step 6: Final answer
    x = 280,617.91

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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.