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Finding the Fourth Proportional to 211,167.39, 316,855.16 and 98,855.22

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Solution

The fourth proportional to 211,167.39, 316,855.16 and 98,855.22 is: 148,331.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,167.39 : 316,855.16 = 98,855.22 : x
  2. Step 2: Convert to fraction form
    211,167.39/316,855.16 = 98,855.22/x
  3. Step 3: Cross multiply
    211,167.39x = 316,855.16 × 98,855.22
  4. Step 4: Simplify right side
    211,167.39x = 31,322,785,212.80
  5. Step 5: Solve for x
    x = 31,322,785,212.80/211,167.39
  6. Step 6: Final answer
    x = 148,331.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.