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Finding the Fourth Proportional to 306,630, 423,085.68 and 179,280.96

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Solution

The fourth proportional to 306,630, 423,085.68 and 179,280.96 is: 247,370.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,630 : 423,085.68 = 179,280.96 : x
  2. Step 2: Convert to fraction form
    306,630/423,085.68 = 179,280.96/x
  3. Step 3: Cross multiply
    306,630x = 423,085.68 × 179,280.96
  4. Step 4: Simplify right side
    306,630x = 75,851,206,872.65
  5. Step 5: Solve for x
    x = 75,851,206,872.65/306,630
  6. Step 6: Final answer
    x = 247,370.47

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.