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Finding the Fourth Proportional to 205,350.92, 308,026.19 and 77,291.12

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Solution

The fourth proportional to 205,350.92, 308,026.19 and 77,291.12 is: 115,936.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,350.92 : 308,026.19 = 77,291.12 : x
  2. Step 2: Convert to fraction form
    205,350.92/308,026.19 = 77,291.12/x
  3. Step 3: Cross multiply
    205,350.92x = 308,026.19 × 77,291.12
  4. Step 4: Simplify right side
    205,350.92x = 23,807,688,827.98
  5. Step 5: Solve for x
    x = 23,807,688,827.98/205,350.92
  6. Step 6: Final answer
    x = 115,936.61

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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.