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Finding the Fourth Proportional to 228,901.77, 315,903.20 and 126,959.31

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Solution

The fourth proportional to 228,901.77, 315,903.20 and 126,959.31 is: 175,214.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,901.77 : 315,903.20 = 126,959.31 : x
  2. Step 2: Convert to fraction form
    228,901.77/315,903.20 = 126,959.31/x
  3. Step 3: Cross multiply
    228,901.77x = 315,903.20 × 126,959.31
  4. Step 4: Simplify right side
    228,901.77x = 40,106,851,664.00
  5. Step 5: Solve for x
    x = 40,106,851,664.00/228,901.77
  6. Step 6: Final answer
    x = 175,214.25

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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.