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Finding the Fourth Proportional to 219,802.41, 329,727.71 and 69,990.08

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Solution

The fourth proportional to 219,802.41, 329,727.71 and 69,990.08 is: 104,992.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,802.41 : 329,727.71 = 69,990.08 : x
  2. Step 2: Convert to fraction form
    219,802.41/329,727.71 = 69,990.08/x
  3. Step 3: Cross multiply
    219,802.41x = 329,727.71 × 69,990.08
  4. Step 4: Simplify right side
    219,802.41x = 23,077,667,327.45
  5. Step 5: Solve for x
    x = 23,077,667,327.45/219,802.41
  6. Step 6: Final answer
    x = 104,992.79

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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.