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Finding the Fourth Proportional to 208,818.18, 312,824.02 and 124,645.41

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Solution

The fourth proportional to 208,818.18, 312,824.02 and 124,645.41 is: 186,727.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,818.18 : 312,824.02 = 124,645.41 : x
  2. Step 2: Convert to fraction form
    208,818.18/312,824.02 = 124,645.41/x
  3. Step 3: Cross multiply
    208,818.18x = 312,824.02 × 124,645.41
  4. Step 4: Simplify right side
    208,818.18x = 38,992,078,230.75
  5. Step 5: Solve for x
    x = 38,992,078,230.75/208,818.18
  6. Step 6: Final answer
    x = 186,727.41

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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.