Home / 209,052.80-313,579.20-207,886.40

Finding the Fourth Proportional to 209,052.80, 313,579.20 and 207,886.40

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Solution

The fourth proportional to 209,052.80, 313,579.20 and 207,886.40 is: 311,829.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,052.80 : 313,579.20 = 207,886.40 : x
  2. Step 2: Convert to fraction form
    209,052.80/313,579.20 = 207,886.40/x
  3. Step 3: Cross multiply
    209,052.80x = 313,579.20 × 207,886.40
  4. Step 4: Simplify right side
    209,052.80x = 65,188,851,002.88
  5. Step 5: Solve for x
    x = 65,188,851,002.88/209,052.80
  6. Step 6: Final answer
    x = 311,829.60

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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.