Home / 643,433.65-965,126.21-194,142.52

Finding the Fourth Proportional to 643,433.65, 965,126.21 and 194,142.52

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Solution

The fourth proportional to 643,433.65, 965,126.21 and 194,142.52 is: 291,206.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,433.65 : 965,126.21 = 194,142.52 : x
  2. Step 2: Convert to fraction form
    643,433.65/965,126.21 = 194,142.52/x
  3. Step 3: Cross multiply
    643,433.65x = 965,126.21 × 194,142.52
  4. Step 4: Simplify right side
    643,433.65x = 187,372,036,401.22
  5. Step 5: Solve for x
    x = 187,372,036,401.22/643,433.65
  6. Step 6: Final answer
    x = 291,206.46

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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.