Home / 325,968.60-489,158.10-138,977.40

Finding the Fourth Proportional to 325,968.60, 489,158.10 and 138,977.40

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Solution

The fourth proportional to 325,968.60, 489,158.10 and 138,977.40 is: 208,553.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,968.60 : 489,158.10 = 138,977.40 : x
  2. Step 2: Convert to fraction form
    325,968.60/489,158.10 = 138,977.40/x
  3. Step 3: Cross multiply
    325,968.60x = 489,158.10 × 138,977.40
  4. Step 4: Simplify right side
    325,968.60x = 67,981,920,926.94
  5. Step 5: Solve for x
    x = 67,981,920,926.94/325,968.60
  6. Step 6: Final answer
    x = 208,553.59

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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.