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Finding the Fourth Proportional to 217,265.78, 299,760.76 and 136,773.65

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Solution

The fourth proportional to 217,265.78, 299,760.76 and 136,773.65 is: 188,706.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,265.78 : 299,760.76 = 136,773.65 : x
  2. Step 2: Convert to fraction form
    217,265.78/299,760.76 = 136,773.65/x
  3. Step 3: Cross multiply
    217,265.78x = 299,760.76 × 136,773.65
  4. Step 4: Simplify right side
    217,265.78x = 40,999,373,271.97
  5. Step 5: Solve for x
    x = 40,999,373,271.97/217,265.78
  6. Step 6: Final answer
    x = 188,706.08

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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.