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Finding the Fourth Proportional to 258,077.79, 386,959.41 and 115,895.43

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Solution

The fourth proportional to 258,077.79, 386,959.41 and 115,895.43 is: 173,772.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,077.79 : 386,959.41 = 115,895.43 : x
  2. Step 2: Convert to fraction form
    258,077.79/386,959.41 = 115,895.43/x
  3. Step 3: Cross multiply
    258,077.79x = 386,959.41 × 115,895.43
  4. Step 4: Simplify right side
    258,077.79x = 44,846,827,214.50
  5. Step 5: Solve for x
    x = 44,846,827,214.50/258,077.79
  6. Step 6: Final answer
    x = 173,772.52

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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.