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Finding the Fourth Proportional to 361,742.51, 542,691.54 and 121,880.25

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Solution

The fourth proportional to 361,742.51, 542,691.54 and 121,880.25 is: 182,846.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    361,742.51 : 542,691.54 = 121,880.25 : x
  2. Step 2: Convert to fraction form
    361,742.51/542,691.54 = 121,880.25/x
  3. Step 3: Cross multiply
    361,742.51x = 542,691.54 × 121,880.25
  4. Step 4: Simplify right side
    361,742.51x = 66,143,380,568.09
  5. Step 5: Solve for x
    x = 66,143,380,568.09/361,742.51
  6. Step 6: Final answer
    x = 182,846.58

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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.