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Finding the Fourth Proportional to 259,007.63, 388,533.44 and 72,019.13

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Solution

The fourth proportional to 259,007.63, 388,533.44 and 72,019.13 is: 108,034.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,007.63 : 388,533.44 = 72,019.13 : x
  2. Step 2: Convert to fraction form
    259,007.63/388,533.44 = 72,019.13/x
  3. Step 3: Cross multiply
    259,007.63x = 388,533.44 × 72,019.13
  4. Step 4: Simplify right side
    259,007.63x = 27,981,838,562.09
  5. Step 5: Solve for x
    x = 27,981,838,562.09/259,007.63
  6. Step 6: Final answer
    x = 108,034.81

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1.5x scale

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.