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Finding the Fourth Proportional to 259,240.80, 388,904.40 and 101,474.40

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Solution

The fourth proportional to 259,240.80, 388,904.40 and 101,474.40 is: 152,228.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,240.80 : 388,904.40 = 101,474.40 : x
  2. Step 2: Convert to fraction form
    259,240.80/388,904.40 = 101,474.40/x
  3. Step 3: Cross multiply
    259,240.80x = 388,904.40 × 101,474.40
  4. Step 4: Simplify right side
    259,240.80x = 39,463,840,647.36
  5. Step 5: Solve for x
    x = 39,463,840,647.36/259,240.80
  6. Step 6: Final answer
    x = 152,228.51

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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.