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Finding the Fourth Proportional to 372,018.63, 557,894.15 and 128,793.66

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Solution

The fourth proportional to 372,018.63, 557,894.15 and 128,793.66 is: 193,144.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,018.63 : 557,894.15 = 128,793.66 : x
  2. Step 2: Convert to fraction form
    372,018.63/557,894.15 = 128,793.66/x
  3. Step 3: Cross multiply
    372,018.63x = 557,894.15 × 128,793.66
  4. Step 4: Simplify right side
    372,018.63x = 71,853,230,114.66
  5. Step 5: Solve for x
    x = 71,853,230,114.66/372,018.63
  6. Step 6: Final answer
    x = 193,144.17

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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.