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Finding the Fourth Proportional to 217,283.37, 299,869.50 and 121,808.52

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Solution

The fourth proportional to 217,283.37, 299,869.50 and 121,808.52 is: 168,106.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,283.37 : 299,869.50 = 121,808.52 : x
  2. Step 2: Convert to fraction form
    217,283.37/299,869.50 = 121,808.52/x
  3. Step 3: Cross multiply
    217,283.37x = 299,869.50 × 121,808.52
  4. Step 4: Simplify right side
    217,283.37x = 36,526,659,988.14
  5. Step 5: Solve for x
    x = 36,526,659,988.14/217,283.37
  6. Step 6: Final answer
    x = 168,106.10

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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.