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Finding the Fourth Proportional to 223,911.06, 309,390.71 and 178,959.99

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Solution

The fourth proportional to 223,911.06, 309,390.71 and 178,959.99 is: 247,279.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,911.06 : 309,390.71 = 178,959.99 : x
  2. Step 2: Convert to fraction form
    223,911.06/309,390.71 = 178,959.99/x
  3. Step 3: Cross multiply
    223,911.06x = 309,390.71 × 178,959.99
  4. Step 4: Simplify right side
    223,911.06x = 55,368,558,367.69
  5. Step 5: Solve for x
    x = 55,368,558,367.69/223,911.06
  6. Step 6: Final answer
    x = 247,279.25

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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.