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Finding the Fourth Proportional to 217,270.65, 299,828.13 and 120,474.89

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Solution

The fourth proportional to 217,270.65, 299,828.13 and 120,474.89 is: 166,252.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,270.65 : 299,828.13 = 120,474.89 : x
  2. Step 2: Convert to fraction form
    217,270.65/299,828.13 = 120,474.89/x
  3. Step 3: Cross multiply
    217,270.65x = 299,828.13 × 120,474.89
  4. Step 4: Simplify right side
    217,270.65x = 36,121,762,518.29
  5. Step 5: Solve for x
    x = 36,121,762,518.29/217,270.65
  6. Step 6: Final answer
    x = 166,252.38

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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.