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Finding the Fourth Proportional to 404,758.80, 607,138.20 and 155,446.80

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Solution

The fourth proportional to 404,758.80, 607,138.20 and 155,446.80 is: 233,170.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,758.80 : 607,138.20 = 155,446.80 : x
  2. Step 2: Convert to fraction form
    404,758.80/607,138.20 = 155,446.80/x
  3. Step 3: Cross multiply
    404,758.80x = 607,138.20 × 155,446.80
  4. Step 4: Simplify right side
    404,758.80x = 94,377,690,347.76
  5. Step 5: Solve for x
    x = 94,377,690,347.76/404,758.80
  6. Step 6: Final answer
    x = 233,170.20

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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.