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Finding the Fourth Proportional to 802,258.74, 1,203,390 and 203,220

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Solution

The fourth proportional to 802,258.74, 1,203,390 and 203,220 is: 304,830.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    802,258.74 : 1,203,390 = 203,220 : x
  2. Step 2: Convert to fraction form
    802,258.74/1,203,390 = 203,220/x
  3. Step 3: Cross multiply
    802,258.74x = 1,203,390 × 203,220
  4. Step 4: Simplify right side
    802,258.74x = 244,552,915,800
  5. Step 5: Solve for x
    x = 244,552,915,800/802,258.74
  6. Step 6: Final answer
    x = 304,830.48

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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.