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Finding the Fourth Proportional to 365,614.92, 548,421.30 and 128,900.52

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Solution

The fourth proportional to 365,614.92, 548,421.30 and 128,900.52 is: 193,350.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    365,614.92 : 548,421.30 = 128,900.52 : x
  2. Step 2: Convert to fraction form
    365,614.92/548,421.30 = 128,900.52/x
  3. Step 3: Cross multiply
    365,614.92x = 548,421.30 × 128,900.52
  4. Step 4: Simplify right side
    365,614.92x = 70,691,790,749.08
  5. Step 5: Solve for x
    x = 70,691,790,749.08/365,614.92
  6. Step 6: Final answer
    x = 193,350.40

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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.