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Finding the Fourth Proportional to 209,983.20, 314,974.80 and 185,488.80

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Solution

The fourth proportional to 209,983.20, 314,974.80 and 185,488.80 is: 278,233.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,983.20 : 314,974.80 = 185,488.80 : x
  2. Step 2: Convert to fraction form
    209,983.20/314,974.80 = 185,488.80/x
  3. Step 3: Cross multiply
    209,983.20x = 314,974.80 × 185,488.80
  4. Step 4: Simplify right side
    209,983.20x = 58,424,297,682.24
  5. Step 5: Solve for x
    x = 58,424,297,682.24/209,983.20
  6. Step 6: Final answer
    x = 278,233.20

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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.