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Finding the Fourth Proportional to 228,891.04, 315,889.04 and 128,308.48

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Solution

The fourth proportional to 228,891.04, 315,889.04 and 128,308.48 is: 177,076.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,891.04 : 315,889.04 = 128,308.48 : x
  2. Step 2: Convert to fraction form
    228,891.04/315,889.04 = 128,308.48/x
  3. Step 3: Cross multiply
    228,891.04x = 315,889.04 × 128,308.48
  4. Step 4: Simplify right side
    228,891.04x = 40,531,242,571.06
  5. Step 5: Solve for x
    x = 40,531,242,571.06/228,891.04
  6. Step 6: Final answer
    x = 177,076.58

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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.