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Finding the Fourth Proportional to 289,766.67, 399,888.39 and 168,888.48

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Solution

The fourth proportional to 289,766.67, 399,888.39 and 168,888.48 is: 233,072.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,766.67 : 399,888.39 = 168,888.48 : x
  2. Step 2: Convert to fraction form
    289,766.67/399,888.39 = 168,888.48/x
  3. Step 3: Cross multiply
    289,766.67x = 399,888.39 × 168,888.48
  4. Step 4: Simplify right side
    289,766.67x = 67,536,542,356.75
  5. Step 5: Solve for x
    x = 67,536,542,356.75/289,766.67
  6. Step 6: Final answer
    x = 233,072.16

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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.