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Finding the Fourth Proportional to 223,439.76, 308,348.88 and 121,465.42

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Solution

The fourth proportional to 223,439.76, 308,348.88 and 121,465.42 is: 167,623.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,439.76 : 308,348.88 = 121,465.42 : x
  2. Step 2: Convert to fraction form
    223,439.76/308,348.88 = 121,465.42/x
  3. Step 3: Cross multiply
    223,439.76x = 308,348.88 × 121,465.42
  4. Step 4: Simplify right side
    223,439.76x = 37,453,726,601.17
  5. Step 5: Solve for x
    x = 37,453,726,601.17/223,439.76
  6. Step 6: Final answer
    x = 167,623.37

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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.