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Finding the Fourth Proportional to 365,553.79, 548,150.85 and 128,862.07

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Solution

The fourth proportional to 365,553.79, 548,150.85 and 128,862.07 is: 193,229.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    365,553.79 : 548,150.85 = 128,862.07 : x
  2. Step 2: Convert to fraction form
    365,553.79/548,150.85 = 128,862.07/x
  3. Step 3: Cross multiply
    365,553.79x = 548,150.85 × 128,862.07
  4. Step 4: Simplify right side
    365,553.79x = 70,635,853,203.26
  5. Step 5: Solve for x
    x = 70,635,853,203.26/365,553.79
  6. Step 6: Final answer
    x = 193,229.71

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1.5x scale

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.