Home / 209,821.60-314,732.40-131,024.80

Finding the Fourth Proportional to 209,821.60, 314,732.40 and 131,024.80

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Solution

The fourth proportional to 209,821.60, 314,732.40 and 131,024.80 is: 196,537.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,821.60 : 314,732.40 = 131,024.80 : x
  2. Step 2: Convert to fraction form
    209,821.60/314,732.40 = 131,024.80/x
  3. Step 3: Cross multiply
    209,821.60x = 314,732.40 × 131,024.80
  4. Step 4: Simplify right side
    209,821.60x = 41,237,749,763.52
  5. Step 5: Solve for x
    x = 41,237,749,763.52/209,821.60
  6. Step 6: Final answer
    x = 196,537.20

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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.