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Finding the Fourth Proportional to 159,378.57, 239,029.58 and 47,028.43

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Solution

The fourth proportional to 159,378.57, 239,029.58 and 47,028.43 is: 70,531.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,378.57 : 239,029.58 = 47,028.43 : x
  2. Step 2: Convert to fraction form
    159,378.57/239,029.58 = 47,028.43/x
  3. Step 3: Cross multiply
    159,378.57x = 239,029.58 × 47,028.43
  4. Step 4: Simplify right side
    159,378.57x = 11,241,186,287.32
  5. Step 5: Solve for x
    x = 11,241,186,287.32/159,378.57
  6. Step 6: Final answer
    x = 70,531.35

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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.