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Finding the Fourth Proportional to 228,866.30, 315,833.98 and 126,891.79

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Solution

The fourth proportional to 228,866.30, 315,833.98 and 126,891.79 is: 175,109.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,866.30 : 315,833.98 = 126,891.79 : x
  2. Step 2: Convert to fraction form
    228,866.30/315,833.98 = 126,891.79/x
  3. Step 3: Cross multiply
    228,866.30x = 315,833.98 × 126,891.79
  4. Step 4: Simplify right side
    228,866.30x = 40,076,739,065.02
  5. Step 5: Solve for x
    x = 40,076,739,065.02/228,866.30
  6. Step 6: Final answer
    x = 175,109.83

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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.