Home / 643,443.38-965,140.83-194,152.31

Finding the Fourth Proportional to 643,443.38, 965,140.83 and 194,152.31

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Solution

The fourth proportional to 643,443.38, 965,140.83 and 194,152.31 is: 291,221.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,443.38 : 965,140.83 = 194,152.31 : x
  2. Step 2: Convert to fraction form
    643,443.38/965,140.83 = 194,152.31/x
  3. Step 3: Cross multiply
    643,443.38x = 965,140.83 × 194,152.31
  4. Step 4: Simplify right side
    643,443.38x = 187,384,316,794.11
  5. Step 5: Solve for x
    x = 187,384,316,794.11/643,443.38
  6. Step 6: Final answer
    x = 291,221.15

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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.