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Finding the Fourth Proportional to 324,387.40, 486,581.10 and 309,625.15

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Solution

The fourth proportional to 324,387.40, 486,581.10 and 309,625.15 is: 464,437.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,387.40 : 486,581.10 = 309,625.15 : x
  2. Step 2: Convert to fraction form
    324,387.40/486,581.10 = 309,625.15/x
  3. Step 3: Cross multiply
    324,387.40x = 486,581.10 × 309,625.15
  4. Step 4: Simplify right side
    324,387.40x = 150,657,746,074.67
  5. Step 5: Solve for x
    x = 150,657,746,074.67/324,387.40
  6. Step 6: Final answer
    x = 464,437.73

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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.