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Finding the Fourth Proportional to 259,035, 388,574.51 and 72,046.50

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Solution

The fourth proportional to 259,035, 388,574.51 and 72,046.50 is: 108,075.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,035 : 388,574.51 = 72,046.50 : x
  2. Step 2: Convert to fraction form
    259,035/388,574.51 = 72,046.50/x
  3. Step 3: Cross multiply
    259,035x = 388,574.51 × 72,046.50
  4. Step 4: Simplify right side
    259,035x = 27,995,433,074.48
  5. Step 5: Solve for x
    x = 27,995,433,074.48/259,035
  6. Step 6: Final answer
    x = 108,075.87

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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.