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Finding the Fourth Proportional to 229,636.71, 344,611.78 and 79,875.51

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Solution

The fourth proportional to 229,636.71, 344,611.78 and 79,875.51 is: 119,867.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    229,636.71 : 344,611.78 = 79,875.51 : x
  2. Step 2: Convert to fraction form
    229,636.71/344,611.78 = 79,875.51/x
  3. Step 3: Cross multiply
    229,636.71x = 344,611.78 × 79,875.51
  4. Step 4: Simplify right side
    229,636.71x = 27,526,041,679.51
  5. Step 5: Solve for x
    x = 27,526,041,679.51/229,636.71
  6. Step 6: Final answer
    x = 119,867.78

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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.