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Finding the Fourth Proportional to 372,018.96, 557,700.12 and 135,320.22

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Solution

The fourth proportional to 372,018.96, 557,700.12 and 135,320.22 is: 202,860.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,018.96 : 557,700.12 = 135,320.22 : x
  2. Step 2: Convert to fraction form
    372,018.96/557,700.12 = 135,320.22/x
  3. Step 3: Cross multiply
    372,018.96x = 557,700.12 × 135,320.22
  4. Step 4: Simplify right side
    372,018.96x = 75,468,102,932.43
  5. Step 5: Solve for x
    x = 75,468,102,932.43/372,018.96
  6. Step 6: Final answer
    x = 202,860.91

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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.