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Finding the Fourth Proportional to 361,556.40, 542,362.32 and 121,671.48

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Solution

The fourth proportional to 361,556.40, 542,362.32 and 121,671.48 is: 182,516.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    361,556.40 : 542,362.32 = 121,671.48 : x
  2. Step 2: Convert to fraction form
    361,556.40/542,362.32 = 121,671.48/x
  3. Step 3: Cross multiply
    361,556.40x = 542,362.32 × 121,671.48
  4. Step 4: Simplify right side
    361,556.40x = 65,990,026,170.63
  5. Step 5: Solve for x
    x = 65,990,026,170.63/361,556.40
  6. Step 6: Final answer
    x = 182,516.55

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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.