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Finding the Fourth Proportional to 228,800.48, 315,743.76 and 128,198.24

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Solution

The fourth proportional to 228,800.48, 315,743.76 and 128,198.24 is: 176,913.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,800.48 : 315,743.76 = 128,198.24 : x
  2. Step 2: Convert to fraction form
    228,800.48/315,743.76 = 128,198.24/x
  3. Step 3: Cross multiply
    228,800.48x = 315,743.76 × 128,198.24
  4. Step 4: Simplify right side
    228,800.48x = 40,477,794,322.98
  5. Step 5: Solve for x
    x = 40,477,794,322.98/228,800.48
  6. Step 6: Final answer
    x = 176,913.07

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1.5x scale

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.