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Finding the Fourth Proportional to 361,760.45, 542,661.84 and 121,854.29

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Solution

The fourth proportional to 361,760.45, 542,661.84 and 121,854.29 is: 182,788.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    361,760.45 : 542,661.84 = 121,854.29 : x
  2. Step 2: Convert to fraction form
    361,760.45/542,661.84 = 121,854.29/x
  3. Step 3: Cross multiply
    361,760.45x = 542,661.84 × 121,854.29
  4. Step 4: Simplify right side
    361,760.45x = 66,125,670,509.98
  5. Step 5: Solve for x
    x = 66,125,670,509.98/361,760.45
  6. Step 6: Final answer
    x = 182,788.56

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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.