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Finding the Fourth Proportional to 211,008.51, 316,512.77 and 70,766.73

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Solution

The fourth proportional to 211,008.51, 316,512.77 and 70,766.73 is: 106,150.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,008.51 : 316,512.77 = 70,766.73 : x
  2. Step 2: Convert to fraction form
    211,008.51/316,512.77 = 70,766.73/x
  3. Step 3: Cross multiply
    211,008.51x = 316,512.77 × 70,766.73
  4. Step 4: Simplify right side
    211,008.51x = 22,398,573,736.14
  5. Step 5: Solve for x
    x = 22,398,573,736.14/211,008.51
  6. Step 6: Final answer
    x = 106,150.10

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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.