Home / 393,441.71-542,985.32-223,675.43

Finding the Fourth Proportional to 393,441.71, 542,985.32 and 223,675.43

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Solution

The fourth proportional to 393,441.71, 542,985.32 and 223,675.43 is: 308,692.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,441.71 : 542,985.32 = 223,675.43 : x
  2. Step 2: Convert to fraction form
    393,441.71/542,985.32 = 223,675.43/x
  3. Step 3: Cross multiply
    393,441.71x = 542,985.32 × 223,675.43
  4. Step 4: Simplify right side
    393,441.71x = 121,452,472,778.95
  5. Step 5: Solve for x
    x = 121,452,472,778.95/393,441.71
  6. Step 6: Final answer
    x = 308,692.42

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.