Home / 385,550.90-578,447.33-231,853.78

Finding the Fourth Proportional to 385,550.90, 578,447.33 and 231,853.78

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Solution

The fourth proportional to 385,550.90, 578,447.33 and 231,853.78 is: 347,853.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,550.90 : 578,447.33 = 231,853.78 : x
  2. Step 2: Convert to fraction form
    385,550.90/578,447.33 = 231,853.78/x
  3. Step 3: Cross multiply
    385,550.90x = 578,447.33 × 231,853.78
  4. Step 4: Simplify right side
    385,550.90x = 134,115,200,857.89
  5. Step 5: Solve for x
    x = 134,115,200,857.89/385,550.90
  6. Step 6: Final answer
    x = 347,853.43

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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.