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Finding the Fourth Proportional to 221,985.70, 332,978.55 and 151,126.90

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Solution

The fourth proportional to 221,985.70, 332,978.55 and 151,126.90 is: 226,690.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,985.70 : 332,978.55 = 151,126.90 : x
  2. Step 2: Convert to fraction form
    221,985.70/332,978.55 = 151,126.90/x
  3. Step 3: Cross multiply
    221,985.70x = 332,978.55 × 151,126.90
  4. Step 4: Simplify right side
    221,985.70x = 50,322,016,028.00
  5. Step 5: Solve for x
    x = 50,322,016,028.00/221,985.70
  6. Step 6: Final answer
    x = 226,690.35

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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.