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Finding the Fourth Proportional to 217,607.66, 300,320.14 and 122,114.73

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Solution

The fourth proportional to 217,607.66, 300,320.14 and 122,114.73 is: 168,530.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,607.66 : 300,320.14 = 122,114.73 : x
  2. Step 2: Convert to fraction form
    217,607.66/300,320.14 = 122,114.73/x
  3. Step 3: Cross multiply
    217,607.66x = 300,320.14 × 122,114.73
  4. Step 4: Simplify right side
    217,607.66x = 36,673,513,530.06
  5. Step 5: Solve for x
    x = 36,673,513,530.06/217,607.66
  6. Step 6: Final answer
    x = 168,530.44

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1.5x scale

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.