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Finding the Fourth Proportional to 361,641.51, 542,388.15 and 136,924.43

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Solution

The fourth proportional to 361,641.51, 542,388.15 and 136,924.43 is: 205,358.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    361,641.51 : 542,388.15 = 136,924.43 : x
  2. Step 2: Convert to fraction form
    361,641.51/542,388.15 = 136,924.43/x
  3. Step 3: Cross multiply
    361,641.51x = 542,388.15 × 136,924.43
  4. Step 4: Simplify right side
    361,641.51x = 74,266,185,565.56
  5. Step 5: Solve for x
    x = 74,266,185,565.56/361,641.51
  6. Step 6: Final answer
    x = 205,358.58

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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.