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Finding the Fourth Proportional to 228,991.12, 315,943.14 and 148,422.04

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Solution

The fourth proportional to 228,991.12, 315,943.14 and 148,422.04 is: 204,780.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,991.12 : 315,943.14 = 148,422.04 : x
  2. Step 2: Convert to fraction form
    228,991.12/315,943.14 = 148,422.04/x
  3. Step 3: Cross multiply
    228,991.12x = 315,943.14 × 148,422.04
  4. Step 4: Simplify right side
    228,991.12x = 46,892,925,362.81
  5. Step 5: Solve for x
    x = 46,892,925,362.81/228,991.12
  6. Step 6: Final answer
    x = 204,780.54

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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.