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Finding the Fourth Proportional to 361,999.20, 542,868.72 and 125,277.60

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Solution

The fourth proportional to 361,999.20, 542,868.72 and 125,277.60 is: 187,871.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    361,999.20 : 542,868.72 = 125,277.60 : x
  2. Step 2: Convert to fraction form
    361,999.20/542,868.72 = 125,277.60/x
  3. Step 3: Cross multiply
    361,999.20x = 542,868.72 × 125,277.60
  4. Step 4: Simplify right side
    361,999.20x = 68,009,290,356.67
  5. Step 5: Solve for x
    x = 68,009,290,356.67/361,999.20
  6. Step 6: Final answer
    x = 187,871.38

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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.