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Finding the Fourth Proportional to 223,391.87, 308,282.60 and 121,417.35

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Solution

The fourth proportional to 223,391.87, 308,282.60 and 121,417.35 is: 167,556.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,391.87 : 308,282.60 = 121,417.35 : x
  2. Step 2: Convert to fraction form
    223,391.87/308,282.60 = 121,417.35/x
  3. Step 3: Cross multiply
    223,391.87x = 308,282.60 × 121,417.35
  4. Step 4: Simplify right side
    223,391.87x = 37,430,856,646.65
  5. Step 5: Solve for x
    x = 37,430,856,646.65/223,391.87
  6. Step 6: Final answer
    x = 167,556.94

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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.