Home / 259,330.70-388,774.14-99,521.30

Finding the Fourth Proportional to 259,330.70, 388,774.14 and 99,521.30

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Solution

The fourth proportional to 259,330.70, 388,774.14 and 99,521.30 is: 149,196.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,330.70 : 388,774.14 = 99,521.30 : x
  2. Step 2: Convert to fraction form
    259,330.70/388,774.14 = 99,521.30/x
  3. Step 3: Cross multiply
    259,330.70x = 388,774.14 × 99,521.30
  4. Step 4: Simplify right side
    259,330.70x = 38,691,307,819.18
  5. Step 5: Solve for x
    x = 38,691,307,819.18/259,330.70
  6. Step 6: Final answer
    x = 149,196.79

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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.