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Finding the Fourth Proportional to 205,663.44, 308,057.67 and 121,332.72

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Solution

The fourth proportional to 205,663.44, 308,057.67 and 121,332.72 is: 181,740.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,663.44 : 308,057.67 = 121,332.72 : x
  2. Step 2: Convert to fraction form
    205,663.44/308,057.67 = 121,332.72/x
  3. Step 3: Cross multiply
    205,663.44x = 308,057.67 × 121,332.72
  4. Step 4: Simplify right side
    205,663.44x = 37,377,475,017.96
  5. Step 5: Solve for x
    x = 37,377,475,017.96/205,663.44
  6. Step 6: Final answer
    x = 181,740.98

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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.