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Finding the Fourth Proportional to 221,699.69, 305,928.15 and 124,899.27

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Solution

The fourth proportional to 221,699.69, 305,928.15 and 124,899.27 is: 172,351.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,699.69 : 305,928.15 = 124,899.27 : x
  2. Step 2: Convert to fraction form
    221,699.69/305,928.15 = 124,899.27/x
  3. Step 3: Cross multiply
    221,699.69x = 305,928.15 × 124,899.27
  4. Step 4: Simplify right side
    221,699.69x = 38,210,202,607.45
  5. Step 5: Solve for x
    x = 38,210,202,607.45/221,699.69
  6. Step 6: Final answer
    x = 172,351.18

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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.