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Finding the Fourth Proportional to 354,180.70, 488,780.78 and 201,216.10

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Solution

The fourth proportional to 354,180.70, 488,780.78 and 201,216.10 is: 277,684.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,180.70 : 488,780.78 = 201,216.10 : x
  2. Step 2: Convert to fraction form
    354,180.70/488,780.78 = 201,216.10/x
  3. Step 3: Cross multiply
    354,180.70x = 488,780.78 × 201,216.10
  4. Step 4: Simplify right side
    354,180.70x = 98,350,562,306.56
  5. Step 5: Solve for x
    x = 98,350,562,306.56/354,180.70
  6. Step 6: Final answer
    x = 277,684.70

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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.