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Finding the Fourth Proportional to 325,616.80, 488,482.80 and 115,376.80

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Solution

The fourth proportional to 325,616.80, 488,482.80 and 115,376.80 is: 173,085.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,616.80 : 488,482.80 = 115,376.80 : x
  2. Step 2: Convert to fraction form
    325,616.80/488,482.80 = 115,376.80/x
  3. Step 3: Cross multiply
    325,616.80x = 488,482.80 × 115,376.80
  4. Step 4: Simplify right side
    325,616.80x = 56,359,582,319.04
  5. Step 5: Solve for x
    x = 56,359,582,319.04/325,616.80
  6. Step 6: Final answer
    x = 173,085.61

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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.