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Finding the Fourth Proportional to 217,814.67, 300,585.44 and 121,018.66

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Solution

The fourth proportional to 217,814.67, 300,585.44 and 121,018.66 is: 167,006.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,814.67 : 300,585.44 = 121,018.66 : x
  2. Step 2: Convert to fraction form
    217,814.67/300,585.44 = 121,018.66/x
  3. Step 3: Cross multiply
    217,814.67x = 300,585.44 × 121,018.66
  4. Step 4: Simplify right side
    217,814.67x = 36,376,446,715.39
  5. Step 5: Solve for x
    x = 36,376,446,715.39/217,814.67
  6. Step 6: Final answer
    x = 167,006.41

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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.