Home / 229,155.56-343,235.79-140,139.20

Finding the Fourth Proportional to 229,155.56, 343,235.79 and 140,139.20

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Solution

The fourth proportional to 229,155.56, 343,235.79 and 140,139.20 is: 209,904.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    229,155.56 : 343,235.79 = 140,139.20 : x
  2. Step 2: Convert to fraction form
    229,155.56/343,235.79 = 140,139.20/x
  3. Step 3: Cross multiply
    229,155.56x = 343,235.79 × 140,139.20
  4. Step 4: Simplify right side
    229,155.56x = 48,100,787,305.79
  5. Step 5: Solve for x
    x = 48,100,787,305.79/229,155.56
  6. Step 6: Final answer
    x = 209,904.52

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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.