Home / 643,822.40-965,863.20-223,011.20

Finding the Fourth Proportional to 643,822.40, 965,863.20 and 223,011.20

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Solution

The fourth proportional to 643,822.40, 965,863.20 and 223,011.20 is: 334,561.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,822.40 : 965,863.20 = 223,011.20 : x
  2. Step 2: Convert to fraction form
    643,822.40/965,863.20 = 223,011.20/x
  3. Step 3: Cross multiply
    643,822.40x = 965,863.20 × 223,011.20
  4. Step 4: Simplify right side
    643,822.40x = 215,398,311,267.84
  5. Step 5: Solve for x
    x = 215,398,311,267.84/643,822.40
  6. Step 6: Final answer
    x = 334,561.69

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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.