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Finding the Fourth Proportional to 217,010.34, 299,474.73 and 121,516.74

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Solution

The fourth proportional to 217,010.34, 299,474.73 and 121,516.74 is: 167,693.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,010.34 : 299,474.73 = 121,516.74 : x
  2. Step 2: Convert to fraction form
    217,010.34/299,474.73 = 121,516.74/x
  3. Step 3: Cross multiply
    217,010.34x = 299,474.73 × 121,516.74
  4. Step 4: Simplify right side
    217,010.34x = 36,391,192,901.98
  5. Step 5: Solve for x
    x = 36,391,192,901.98/217,010.34
  6. Step 6: Final answer
    x = 167,693.36

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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.