Home / 396,387.45-546,887.43-221,931.95

Finding the Fourth Proportional to 396,387.45, 546,887.43 and 221,931.95

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Solution

The fourth proportional to 396,387.45, 546,887.43 and 221,931.95 is: 306,194.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,387.45 : 546,887.43 = 221,931.95 : x
  2. Step 2: Convert to fraction form
    396,387.45/546,887.43 = 221,931.95/x
  3. Step 3: Cross multiply
    396,387.45x = 546,887.43 × 221,931.95
  4. Step 4: Simplify right side
    396,387.45x = 121,371,791,035.95
  5. Step 5: Solve for x
    x = 121,371,791,035.95/396,387.45
  6. Step 6: Final answer
    x = 306,194.84

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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.