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Finding the Fourth Proportional to 217,911.52, 300,701.73 and 122,434.12

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Solution

The fourth proportional to 217,911.52, 300,701.73 and 122,434.12 is: 168,950.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,911.52 : 300,701.73 = 122,434.12 : x
  2. Step 2: Convert to fraction form
    217,911.52/300,701.73 = 122,434.12/x
  3. Step 3: Cross multiply
    217,911.52x = 300,701.73 × 122,434.12
  4. Step 4: Simplify right side
    217,911.52x = 36,816,151,695.03
  5. Step 5: Solve for x
    x = 36,816,151,695.03/217,911.52
  6. Step 6: Final answer
    x = 168,950.00

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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.