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Finding the Fourth Proportional to 258,875.70, 388,082.70 and 101,067.45

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Solution

The fourth proportional to 258,875.70, 388,082.70 and 101,067.45 is: 151,511.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,875.70 : 388,082.70 = 101,067.45 : x
  2. Step 2: Convert to fraction form
    258,875.70/388,082.70 = 101,067.45/x
  3. Step 3: Cross multiply
    258,875.70x = 388,082.70 × 101,067.45
  4. Step 4: Simplify right side
    258,875.70x = 39,222,528,878.12
  5. Step 5: Solve for x
    x = 39,222,528,878.12/258,875.70
  6. Step 6: Final answer
    x = 151,511.05

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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.