Home / 386,476.70-579,715.05-228,623.90

Finding the Fourth Proportional to 386,476.70, 579,715.05 and 228,623.90

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Solution

The fourth proportional to 386,476.70, 579,715.05 and 228,623.90 is: 342,935.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,476.70 : 579,715.05 = 228,623.90 : x
  2. Step 2: Convert to fraction form
    386,476.70/579,715.05 = 228,623.90/x
  3. Step 3: Cross multiply
    386,476.70x = 579,715.05 × 228,623.90
  4. Step 4: Simplify right side
    386,476.70x = 132,536,715,619.70
  5. Step 5: Solve for x
    x = 132,536,715,619.70/386,476.70
  6. Step 6: Final answer
    x = 342,935.85

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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.