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Finding the Fourth Proportional to 278,859.60, 383,934.60 and 236,350.80

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Solution

The fourth proportional to 278,859.60, 383,934.60 and 236,350.80 is: 325,408.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,859.60 : 383,934.60 = 236,350.80 : x
  2. Step 2: Convert to fraction form
    278,859.60/383,934.60 = 236,350.80/x
  3. Step 3: Cross multiply
    278,859.60x = 383,934.60 × 236,350.80
  4. Step 4: Simplify right side
    278,859.60x = 90,743,249,857.68
  5. Step 5: Solve for x
    x = 90,743,249,857.68/278,859.60
  6. Step 6: Final answer
    x = 325,408.38

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1.5x scale

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.