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Finding the Fourth Proportional to 361,662.51, 542,419.65 and 136,945.44

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Solution

The fourth proportional to 361,662.51, 542,419.65 and 136,945.44 is: 205,390.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    361,662.51 : 542,419.65 = 136,945.44 : x
  2. Step 2: Convert to fraction form
    361,662.51/542,419.65 = 136,945.44/x
  3. Step 3: Cross multiply
    361,662.51x = 542,419.65 × 136,945.44
  4. Step 4: Simplify right side
    361,662.51x = 74,281,897,633.90
  5. Step 5: Solve for x
    x = 74,281,897,633.90/361,662.51
  6. Step 6: Final answer
    x = 205,390.10

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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.