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Finding the Fourth Proportional to 217,218.66, 299,756.88 and 126,568.98

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Solution

The fourth proportional to 217,218.66, 299,756.88 and 126,568.98 is: 174,662.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,218.66 : 299,756.88 = 126,568.98 : x
  2. Step 2: Convert to fraction form
    217,218.66/299,756.88 = 126,568.98/x
  3. Step 3: Cross multiply
    217,218.66x = 299,756.88 × 126,568.98
  4. Step 4: Simplify right side
    217,218.66x = 37,939,922,549.58
  5. Step 5: Solve for x
    x = 37,939,922,549.58/217,218.66
  6. Step 6: Final answer
    x = 174,662.35

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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.