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Finding the Fourth Proportional to 217,786.88, 300,593.40 and 156,696.32

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Solution

The fourth proportional to 217,786.88, 300,593.40 and 156,696.32 is: 216,275.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,786.88 : 300,593.40 = 156,696.32 : x
  2. Step 2: Convert to fraction form
    217,786.88/300,593.40 = 156,696.32/x
  3. Step 3: Cross multiply
    217,786.88x = 300,593.40 × 156,696.32
  4. Step 4: Simplify right side
    217,786.88x = 47,101,879,596.29
  5. Step 5: Solve for x
    x = 47,101,879,596.29/217,786.88
  6. Step 6: Final answer
    x = 216,275.10

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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.