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Finding the Fourth Proportional to 208,611.84, 312,917.76 and 60,867.84

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Solution

The fourth proportional to 208,611.84, 312,917.76 and 60,867.84 is: 91,301.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,611.84 : 312,917.76 = 60,867.84 : x
  2. Step 2: Convert to fraction form
    208,611.84/312,917.76 = 60,867.84/x
  3. Step 3: Cross multiply
    208,611.84x = 312,917.76 × 60,867.84
  4. Step 4: Simplify right side
    208,611.84x = 19,046,628,148.84
  5. Step 5: Solve for x
    x = 19,046,628,148.84/208,611.84
  6. Step 6: Final answer
    x = 91,301.76

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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.