Home / 543,371.20-815,056.80-318,839.20

Finding the Fourth Proportional to 543,371.20, 815,056.80 and 318,839.20

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Solution

The fourth proportional to 543,371.20, 815,056.80 and 318,839.20 is: 478,258.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,371.20 : 815,056.80 = 318,839.20 : x
  2. Step 2: Convert to fraction form
    543,371.20/815,056.80 = 318,839.20/x
  3. Step 3: Cross multiply
    543,371.20x = 815,056.80 × 318,839.20
  4. Step 4: Simplify right side
    543,371.20x = 259,872,058,066.56
  5. Step 5: Solve for x
    x = 259,872,058,066.56/543,371.20
  6. Step 6: Final answer
    x = 478,258.80

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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.