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Finding the Fourth Proportional to 361,840.35, 542,744.83 and 121,938.40

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Solution

The fourth proportional to 361,840.35, 542,744.83 and 121,938.40 is: 182,902.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    361,840.35 : 542,744.83 = 121,938.40 : x
  2. Step 2: Convert to fraction form
    361,840.35/542,744.83 = 121,938.40/x
  3. Step 3: Cross multiply
    361,840.35x = 542,744.83 × 121,938.40
  4. Step 4: Simplify right side
    361,840.35x = 66,181,436,178.47
  5. Step 5: Solve for x
    x = 66,181,436,178.47/361,840.35
  6. Step 6: Final answer
    x = 182,902.31

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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.