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Finding the Fourth Proportional to 155,697.78, 233,828.55 and 143,195.43

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Solution

The fourth proportional to 155,697.78, 233,828.55 and 143,195.43 is: 215,052.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,697.78 : 233,828.55 = 143,195.43 : x
  2. Step 2: Convert to fraction form
    155,697.78/233,828.55 = 143,195.43/x
  3. Step 3: Cross multiply
    155,697.78x = 233,828.55 × 143,195.43
  4. Step 4: Simplify right side
    155,697.78x = 33,483,179,763.53
  5. Step 5: Solve for x
    x = 33,483,179,763.53/155,697.78
  6. Step 6: Final answer
    x = 215,052.39

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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.