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Finding the Fourth Proportional to 402,245.69, 603,367.94 and 102,726.45

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Solution

The fourth proportional to 402,245.69, 603,367.94 and 102,726.45 is: 154,089.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,245.69 : 603,367.94 = 102,726.45 : x
  2. Step 2: Convert to fraction form
    402,245.69/603,367.94 = 102,726.45/x
  3. Step 3: Cross multiply
    402,245.69x = 603,367.94 × 102,726.45
  4. Step 4: Simplify right side
    402,245.69x = 61,981,846,006.38
  5. Step 5: Solve for x
    x = 61,981,846,006.38/402,245.69
  6. Step 6: Final answer
    x = 154,089.52

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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.