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Finding the Fourth Proportional to 372,000.80, 558,022.80 and 105,780.80

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Solution

The fourth proportional to 372,000.80, 558,022.80 and 105,780.80 is: 158,677.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,000.80 : 558,022.80 = 105,780.80 : x
  2. Step 2: Convert to fraction form
    372,000.80/558,022.80 = 105,780.80/x
  3. Step 3: Cross multiply
    372,000.80x = 558,022.80 × 105,780.80
  4. Step 4: Simplify right side
    372,000.80x = 59,028,098,202.24
  5. Step 5: Solve for x
    x = 59,028,098,202.24/372,000.80
  6. Step 6: Final answer
    x = 158,677.34

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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.