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Finding the Fourth Proportional to 203,258.63, 304,838.93 and 84,865.79

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Solution

The fourth proportional to 203,258.63, 304,838.93 and 84,865.79 is: 127,278.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,258.63 : 304,838.93 = 84,865.79 : x
  2. Step 2: Convert to fraction form
    203,258.63/304,838.93 = 84,865.79/x
  3. Step 3: Cross multiply
    203,258.63x = 304,838.93 × 84,865.79
  4. Step 4: Simplify right side
    203,258.63x = 25,870,396,617.20
  5. Step 5: Solve for x
    x = 25,870,396,617.20/203,258.63
  6. Step 6: Final answer
    x = 127,278.22

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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.