Home / 279,947.20-419,797.68-102,408.16

Finding the Fourth Proportional to 279,947.20, 419,797.68 and 102,408.16

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Solution

The fourth proportional to 279,947.20, 419,797.68 and 102,408.16 is: 153,567.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,947.20 : 419,797.68 = 102,408.16 : x
  2. Step 2: Convert to fraction form
    279,947.20/419,797.68 = 102,408.16/x
  3. Step 3: Cross multiply
    279,947.20x = 419,797.68 × 102,408.16
  4. Step 4: Simplify right side
    279,947.20x = 42,990,707,981.07
  5. Step 5: Solve for x
    x = 42,990,707,981.07/279,947.20
  6. Step 6: Final answer
    x = 153,567.20

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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.