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Finding the Fourth Proportional to 326,353.17, 489,517.44 and 89,689.69

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Solution

The fourth proportional to 326,353.17, 489,517.44 and 89,689.69 is: 134,531.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,353.17 : 489,517.44 = 89,689.69 : x
  2. Step 2: Convert to fraction form
    326,353.17/489,517.44 = 89,689.69/x
  3. Step 3: Cross multiply
    326,353.17x = 489,517.44 × 89,689.69
  4. Step 4: Simplify right side
    326,353.17x = 43,904,667,443.19
  5. Step 5: Solve for x
    x = 43,904,667,443.19/326,353.17
  6. Step 6: Final answer
    x = 134,531.15

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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.