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Finding the Fourth Proportional to 216,866.31, 299,239.80 and 136,236.73

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Solution

The fourth proportional to 216,866.31, 299,239.80 and 136,236.73 is: 187,984.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,866.31 : 299,239.80 = 136,236.73 : x
  2. Step 2: Convert to fraction form
    216,866.31/299,239.80 = 136,236.73/x
  3. Step 3: Cross multiply
    216,866.31x = 299,239.80 × 136,236.73
  4. Step 4: Simplify right side
    216,866.31x = 40,767,451,156.67
  5. Step 5: Solve for x
    x = 40,767,451,156.67/216,866.31
  6. Step 6: Final answer
    x = 187,984.25

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1.5x scale

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.