Home / 279,977.87-419,966.69-69,615.81

Finding the Fourth Proportional to 279,977.87, 419,966.69 and 69,615.81

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Solution

The fourth proportional to 279,977.87, 419,966.69 and 69,615.81 is: 104,423.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,977.87 : 419,966.69 = 69,615.81 : x
  2. Step 2: Convert to fraction form
    279,977.87/419,966.69 = 69,615.81/x
  3. Step 3: Cross multiply
    279,977.87x = 419,966.69 × 69,615.81
  4. Step 4: Simplify right side
    279,977.87x = 29,236,320,949.29
  5. Step 5: Solve for x
    x = 29,236,320,949.29/279,977.87
  6. Step 6: Final answer
    x = 104,423.68

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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.