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Finding the Fourth Proportional to 308,761.40, 426,174.54 and 181,477.88

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Solution

The fourth proportional to 308,761.40, 426,174.54 and 181,477.88 is: 250,488.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,761.40 : 426,174.54 = 181,477.88 : x
  2. Step 2: Convert to fraction form
    308,761.40/426,174.54 = 181,477.88/x
  3. Step 3: Cross multiply
    308,761.40x = 426,174.54 × 181,477.88
  4. Step 4: Simplify right side
    308,761.40x = 77,341,252,029.18
  5. Step 5: Solve for x
    x = 77,341,252,029.18/308,761.40
  6. Step 6: Final answer
    x = 250,488.73

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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.