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Finding the Fourth Proportional to 279,513.76, 419,339.76 and 92,544.16

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Solution

The fourth proportional to 279,513.76, 419,339.76 and 92,544.16 is: 138,839.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,513.76 : 419,339.76 = 92,544.16 : x
  2. Step 2: Convert to fraction form
    279,513.76/419,339.76 = 92,544.16/x
  3. Step 3: Cross multiply
    279,513.76x = 419,339.76 × 92,544.16
  4. Step 4: Simplify right side
    279,513.76x = 38,807,445,843.80
  5. Step 5: Solve for x
    x = 38,807,445,843.80/279,513.76
  6. Step 6: Final answer
    x = 138,839.12

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1.5x scale

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.