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Finding the Fourth Proportional to 354,448.35, 489,167.79 and 201,534.51

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Solution

The fourth proportional to 354,448.35, 489,167.79 and 201,534.51 is: 278,134.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,448.35 : 489,167.79 = 201,534.51 : x
  2. Step 2: Convert to fraction form
    354,448.35/489,167.79 = 201,534.51/x
  3. Step 3: Cross multiply
    354,448.35x = 489,167.79 × 201,534.51
  4. Step 4: Simplify right side
    354,448.35x = 98,584,190,865.43
  5. Step 5: Solve for x
    x = 98,584,190,865.43/354,448.35
  6. Step 6: Final answer
    x = 278,134.15

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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.