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Finding the Fourth Proportional to 438,740.89, 658,151.49 and 123,195.67

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Solution

The fourth proportional to 438,740.89, 658,151.49 and 123,195.67 is: 184,804.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,740.89 : 658,151.49 = 123,195.67 : x
  2. Step 2: Convert to fraction form
    438,740.89/658,151.49 = 123,195.67/x
  3. Step 3: Cross multiply
    438,740.89x = 658,151.49 × 123,195.67
  4. Step 4: Simplify right side
    438,740.89x = 81,081,413,772.05
  5. Step 5: Solve for x
    x = 81,081,413,772.05/438,740.89
  6. Step 6: Final answer
    x = 184,804.78

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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.