Home / 391,942.56-540,870.30-222,176.28

Finding the Fourth Proportional to 391,942.56, 540,870.30 and 222,176.28

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Solution

The fourth proportional to 391,942.56, 540,870.30 and 222,176.28 is: 306,597.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,942.56 : 540,870.30 = 222,176.28 : x
  2. Step 2: Convert to fraction form
    391,942.56/540,870.30 = 222,176.28/x
  3. Step 3: Cross multiply
    391,942.56x = 540,870.30 × 222,176.28
  4. Step 4: Simplify right side
    391,942.56x = 120,168,551,216.48
  5. Step 5: Solve for x
    x = 120,168,551,216.48/391,942.56
  6. Step 6: Final answer
    x = 306,597.35

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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.