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Finding the Fourth Proportional to 222,820.76, 334,443.36 and 138,325.20

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Solution

The fourth proportional to 222,820.76, 334,443.36 and 138,325.20 is: 207,619.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,820.76 : 334,443.36 = 138,325.20 : x
  2. Step 2: Convert to fraction form
    222,820.76/334,443.36 = 138,325.20/x
  3. Step 3: Cross multiply
    222,820.76x = 334,443.36 × 138,325.20
  4. Step 4: Simplify right side
    222,820.76x = 46,261,944,660.67
  5. Step 5: Solve for x
    x = 46,261,944,660.67/222,820.76
  6. Step 6: Final answer
    x = 207,619.55

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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.