Home / 213,721.60-320,582.40-203,880.10

Finding the Fourth Proportional to 213,721.60, 320,582.40 and 203,880.10

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Solution

The fourth proportional to 213,721.60, 320,582.40 and 203,880.10 is: 305,820.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,721.60 : 320,582.40 = 203,880.10 : x
  2. Step 2: Convert to fraction form
    213,721.60/320,582.40 = 203,880.10/x
  3. Step 3: Cross multiply
    213,721.60x = 320,582.40 × 203,880.10
  4. Step 4: Simplify right side
    213,721.60x = 65,360,371,770.24
  5. Step 5: Solve for x
    x = 65,360,371,770.24/213,721.60
  6. Step 6: Final answer
    x = 305,820.15

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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.