Home / 385,892.20-578,924.70-149,213.80

Finding the Fourth Proportional to 385,892.20, 578,924.70 and 149,213.80

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Solution

The fourth proportional to 385,892.20, 578,924.70 and 149,213.80 is: 223,854.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,892.20 : 578,924.70 = 149,213.80 : x
  2. Step 2: Convert to fraction form
    385,892.20/578,924.70 = 149,213.80/x
  3. Step 3: Cross multiply
    385,892.20x = 578,924.70 × 149,213.80
  4. Step 4: Simplify right side
    385,892.20x = 86,383,554,400.86
  5. Step 5: Solve for x
    x = 86,383,554,400.86/385,892.20
  6. Step 6: Final answer
    x = 223,854.11

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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.