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Finding the Fourth Proportional to 283,638.66, 425,479.86 and 83,955.84

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Solution

The fourth proportional to 283,638.66, 425,479.86 and 83,955.84 is: 125,940.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,638.66 : 425,479.86 = 83,955.84 : x
  2. Step 2: Convert to fraction form
    283,638.66/425,479.86 = 83,955.84/x
  3. Step 3: Cross multiply
    283,638.66x = 425,479.86 × 83,955.84
  4. Step 4: Simplify right side
    283,638.66x = 35,721,519,049.38
  5. Step 5: Solve for x
    x = 35,721,519,049.38/283,638.66
  6. Step 6: Final answer
    x = 125,940.23

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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.