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Finding the Fourth Proportional to 354,380.31, 489,026.28 and 201,398.04

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Solution

The fourth proportional to 354,380.31, 489,026.28 and 201,398.04 is: 277,918.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,380.31 : 489,026.28 = 201,398.04 : x
  2. Step 2: Convert to fraction form
    354,380.31/489,026.28 = 201,398.04/x
  3. Step 3: Cross multiply
    354,380.31x = 489,026.28 × 201,398.04
  4. Step 4: Simplify right side
    354,380.31x = 98,488,934,300.49
  5. Step 5: Solve for x
    x = 98,488,934,300.49/354,380.31
  6. Step 6: Final answer
    x = 277,918.75

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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.