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Finding the Fourth Proportional to 372,238.61, 558,361.20 and 105,998.90

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Solution

The fourth proportional to 372,238.61, 558,361.20 and 105,998.90 is: 158,999.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,238.61 : 558,361.20 = 105,998.90 : x
  2. Step 2: Convert to fraction form
    372,238.61/558,361.20 = 105,998.90/x
  3. Step 3: Cross multiply
    372,238.61x = 558,361.20 × 105,998.90
  4. Step 4: Simplify right side
    372,238.61x = 59,185,673,002.68
  5. Step 5: Solve for x
    x = 59,185,673,002.68/372,238.61
  6. Step 6: Final answer
    x = 158,999.29

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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.