Home / 228,743.60-343,161.26-78,989.38

Finding the Fourth Proportional to 228,743.60, 343,161.26 and 78,989.38

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Solution

The fourth proportional to 228,743.60, 343,161.26 and 78,989.38 is: 118,499.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,743.60 : 343,161.26 = 78,989.38 : x
  2. Step 2: Convert to fraction form
    228,743.60/343,161.26 = 78,989.38/x
  3. Step 3: Cross multiply
    228,743.60x = 343,161.26 × 78,989.38
  4. Step 4: Simplify right side
    228,743.60x = 27,106,094,210.78
  5. Step 5: Solve for x
    x = 27,106,094,210.78/228,743.60
  6. Step 6: Final answer
    x = 118,499.90

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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.