Home / 409,621.20-565,279.92-228,344.64

Finding the Fourth Proportional to 409,621.20, 565,279.92 and 228,344.64

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Solution

The fourth proportional to 409,621.20, 565,279.92 and 228,344.64 is: 315,117.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    409,621.20 : 565,279.92 = 228,344.64 : x
  2. Step 2: Convert to fraction form
    409,621.20/565,279.92 = 228,344.64/x
  3. Step 3: Cross multiply
    409,621.20x = 565,279.92 × 228,344.64
  4. Step 4: Simplify right side
    409,621.20x = 129,078,639,831.63
  5. Step 5: Solve for x
    x = 129,078,639,831.63/409,621.20
  6. Step 6: Final answer
    x = 315,117.09

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.