Home / 209,234.20-313,851.30-138,885.40

Finding the Fourth Proportional to 209,234.20, 313,851.30 and 138,885.40

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Solution

The fourth proportional to 209,234.20, 313,851.30 and 138,885.40 is: 208,328.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,234.20 : 313,851.30 = 138,885.40 : x
  2. Step 2: Convert to fraction form
    209,234.20/313,851.30 = 138,885.40/x
  3. Step 3: Cross multiply
    209,234.20x = 313,851.30 × 138,885.40
  4. Step 4: Simplify right side
    209,234.20x = 43,589,363,341.02
  5. Step 5: Solve for x
    x = 43,589,363,341.02/209,234.20
  6. Step 6: Final answer
    x = 208,328.10

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.