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Finding the Fourth Proportional to 211,498.43, 316,985.13 and 104,767.43

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Solution

The fourth proportional to 211,498.43, 316,985.13 and 104,767.43 is: 157,021.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,498.43 : 316,985.13 = 104,767.43 : x
  2. Step 2: Convert to fraction form
    211,498.43/316,985.13 = 104,767.43/x
  3. Step 3: Cross multiply
    211,498.43x = 316,985.13 × 104,767.43
  4. Step 4: Simplify right side
    211,498.43x = 33,209,715,833.39
  5. Step 5: Solve for x
    x = 33,209,715,833.39/211,498.43
  6. Step 6: Final answer
    x = 157,021.10

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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.