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Finding the Fourth Proportional to 209,310.60, 313,965.90 and 125,329.80

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Solution

The fourth proportional to 209,310.60, 313,965.90 and 125,329.80 is: 187,994.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,310.60 : 313,965.90 = 125,329.80 : x
  2. Step 2: Convert to fraction form
    209,310.60/313,965.90 = 125,329.80/x
  3. Step 3: Cross multiply
    209,310.60x = 313,965.90 × 125,329.80
  4. Step 4: Simplify right side
    209,310.60x = 39,349,283,453.82
  5. Step 5: Solve for x
    x = 39,349,283,453.82/209,310.60
  6. Step 6: Final answer
    x = 187,994.70

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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.