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Finding the Fourth Proportional to 325,979.20, 489,055.20 and 115,595.20

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Solution

The fourth proportional to 325,979.20, 489,055.20 and 115,595.20 is: 173,423.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,979.20 : 489,055.20 = 115,595.20 : x
  2. Step 2: Convert to fraction form
    325,979.20/489,055.20 = 115,595.20/x
  3. Step 3: Cross multiply
    325,979.20x = 489,055.20 × 115,595.20
  4. Step 4: Simplify right side
    325,979.20x = 56,532,433,655.04
  5. Step 5: Solve for x
    x = 56,532,433,655.04/325,979.20
  6. Step 6: Final answer
    x = 173,423.44

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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.