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Finding the Fourth Proportional to 209,266.04, 313,854.78 and 68,991.32

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Solution

The fourth proportional to 209,266.04, 313,854.78 and 68,991.32 is: 103,472.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,266.04 : 313,854.78 = 68,991.32 : x
  2. Step 2: Convert to fraction form
    209,266.04/313,854.78 = 68,991.32/x
  3. Step 3: Cross multiply
    209,266.04x = 313,854.78 × 68,991.32
  4. Step 4: Simplify right side
    209,266.04x = 21,653,255,560.51
  5. Step 5: Solve for x
    x = 21,653,255,560.51/209,266.04
  6. Step 6: Final answer
    x = 103,472.38

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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.