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Finding the Fourth Proportional to 228,969.15, 315,979.74 and 126,996.63

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Solution

The fourth proportional to 228,969.15, 315,979.74 and 126,996.63 is: 175,256.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,969.15 : 315,979.74 = 126,996.63 : x
  2. Step 2: Convert to fraction form
    228,969.15/315,979.74 = 126,996.63/x
  3. Step 3: Cross multiply
    228,969.15x = 315,979.74 × 126,996.63
  4. Step 4: Simplify right side
    228,969.15x = 40,128,362,128.28
  5. Step 5: Solve for x
    x = 40,128,362,128.28/228,969.15
  6. Step 6: Final answer
    x = 175,256.63

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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.