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Finding the Fourth Proportional to 258,559.56, 387,763.56 and 100,750.32

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Solution

The fourth proportional to 258,559.56, 387,763.56 and 100,750.32 is: 151,095.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,559.56 : 387,763.56 = 100,750.32 : x
  2. Step 2: Convert to fraction form
    258,559.56/387,763.56 = 100,750.32/x
  3. Step 3: Cross multiply
    258,559.56x = 387,763.56 × 100,750.32
  4. Step 4: Simplify right side
    258,559.56x = 39,067,302,754.34
  5. Step 5: Solve for x
    x = 39,067,302,754.34/258,559.56
  6. Step 6: Final answer
    x = 151,095.95

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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.