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Finding the Fourth Proportional to 438,803.56, 658,205.22 and 106,379.56

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Solution

The fourth proportional to 438,803.56, 658,205.22 and 106,379.56 is: 159,569.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,803.56 : 658,205.22 = 106,379.56 : x
  2. Step 2: Convert to fraction form
    438,803.56/658,205.22 = 106,379.56/x
  3. Step 3: Cross multiply
    438,803.56x = 658,205.22 × 106,379.56
  4. Step 4: Simplify right side
    438,803.56x = 70,019,581,693.30
  5. Step 5: Solve for x
    x = 70,019,581,693.30/438,803.56
  6. Step 6: Final answer
    x = 159,569.31

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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.