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Finding the Fourth Proportional to 217,662.29, 300,357.49 and 122,150.53

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Solution

The fourth proportional to 217,662.29, 300,357.49 and 122,150.53 is: 168,558.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,662.29 : 300,357.49 = 122,150.53 : x
  2. Step 2: Convert to fraction form
    217,662.29/300,357.49 = 122,150.53/x
  3. Step 3: Cross multiply
    217,662.29x = 300,357.49 × 122,150.53
  4. Step 4: Simplify right side
    217,662.29x = 36,688,827,235.62
  5. Step 5: Solve for x
    x = 36,688,827,235.62/217,662.29
  6. Step 6: Final answer
    x = 168,558.49

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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.