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Finding the Fourth Proportional to 398,625.20, 597,640.20 and 240,820.40

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Solution

The fourth proportional to 398,625.20, 597,640.20 and 240,820.40 is: 361,050.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,625.20 : 597,640.20 = 240,820.40 : x
  2. Step 2: Convert to fraction form
    398,625.20/597,640.20 = 240,820.40/x
  3. Step 3: Cross multiply
    398,625.20x = 597,640.20 × 240,820.40
  4. Step 4: Simplify right side
    398,625.20x = 143,923,952,020.08
  5. Step 5: Solve for x
    x = 143,923,952,020.08/398,625.20
  6. Step 6: Final answer
    x = 361,050.81

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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.