Home / 861,358.87-1,291,939.72-230,321.89

Finding the Fourth Proportional to 861,358.87, 1,291,939.72 and 230,321.89

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Solution

The fourth proportional to 861,358.87, 1,291,939.72 and 230,321.89 is: 345,456.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,358.87 : 1,291,939.72 = 230,321.89 : x
  2. Step 2: Convert to fraction form
    861,358.87/1,291,939.72 = 230,321.89/x
  3. Step 3: Cross multiply
    861,358.87x = 1,291,939.72 × 230,321.89
  4. Step 4: Simplify right side
    861,358.87x = 297,561,994,270.82
  5. Step 5: Solve for x
    x = 297,561,994,270.82/861,358.87
  6. Step 6: Final answer
    x = 345,456.47

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1.5x scale

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.