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Finding the Fourth Proportional to 159,153.70, 238,729.74 and 39,210.42

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Solution

The fourth proportional to 159,153.70, 238,729.74 and 39,210.42 is: 58,815.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,153.70 : 238,729.74 = 39,210.42 : x
  2. Step 2: Convert to fraction form
    159,153.70/238,729.74 = 39,210.42/x
  3. Step 3: Cross multiply
    159,153.70x = 238,729.74 × 39,210.42
  4. Step 4: Simplify right side
    159,153.70x = 9,360,693,371.89
  5. Step 5: Solve for x
    x = 9,360,693,371.89/159,153.70
  6. Step 6: Final answer
    x = 58,815.43

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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.