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Finding the Fourth Proportional to 279,424.40, 419,132.48 and 69,062.32

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Solution

The fourth proportional to 279,424.40, 419,132.48 and 69,062.32 is: 103,592.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,424.40 : 419,132.48 = 69,062.32 : x
  2. Step 2: Convert to fraction form
    279,424.40/419,132.48 = 69,062.32/x
  3. Step 3: Cross multiply
    279,424.40x = 419,132.48 × 69,062.32
  4. Step 4: Simplify right side
    279,424.40x = 28,946,261,456.15
  5. Step 5: Solve for x
    x = 28,946,261,456.15/279,424.40
  6. Step 6: Final answer
    x = 103,592.46

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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.