Home / 260,426.64-390,671.19-91,912.17

Finding the Fourth Proportional to 260,426.64, 390,671.19 and 91,912.17

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Solution

The fourth proportional to 260,426.64, 390,671.19 and 91,912.17 is: 137,879.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,426.64 : 390,671.19 = 91,912.17 : x
  2. Step 2: Convert to fraction form
    260,426.64/390,671.19 = 91,912.17/x
  3. Step 3: Cross multiply
    260,426.64x = 390,671.19 × 91,912.17
  4. Step 4: Simplify right side
    260,426.64x = 35,907,436,829.38
  5. Step 5: Solve for x
    x = 35,907,436,829.38/260,426.64
  6. Step 6: Final answer
    x = 137,879.28

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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.