Home / 643,439.40-965,274.30-269,500.20

Finding the Fourth Proportional to 643,439.40, 965,274.30 and 269,500.20

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Solution

The fourth proportional to 643,439.40, 965,274.30 and 269,500.20 is: 404,298.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,439.40 : 965,274.30 = 269,500.20 : x
  2. Step 2: Convert to fraction form
    643,439.40/965,274.30 = 269,500.20/x
  3. Step 3: Cross multiply
    643,439.40x = 965,274.30 × 269,500.20
  4. Step 4: Simplify right side
    643,439.40x = 260,141,616,904.86
  5. Step 5: Solve for x
    x = 260,141,616,904.86/643,439.40
  6. Step 6: Final answer
    x = 404,298.55

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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.