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Finding the Fourth Proportional to 388,373.80, 535,679.78 and 259,247.24

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Solution

The fourth proportional to 388,373.80, 535,679.78 and 259,247.24 is: 357,576.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,373.80 : 535,679.78 = 259,247.24 : x
  2. Step 2: Convert to fraction form
    388,373.80/535,679.78 = 259,247.24/x
  3. Step 3: Cross multiply
    388,373.80x = 535,679.78 × 259,247.24
  4. Step 4: Simplify right side
    388,373.80x = 138,873,504,488.81
  5. Step 5: Solve for x
    x = 138,873,504,488.81/388,373.80
  6. Step 6: Final answer
    x = 357,576.91

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.