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Finding the Fourth Proportional to 228,920.67, 315,901.76 and 126,950.31

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Solution

The fourth proportional to 228,920.67, 315,901.76 and 126,950.31 is: 175,186.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,920.67 : 315,901.76 = 126,950.31 : x
  2. Step 2: Convert to fraction form
    228,920.67/315,901.76 = 126,950.31/x
  3. Step 3: Cross multiply
    228,920.67x = 315,901.76 × 126,950.31
  4. Step 4: Simplify right side
    228,920.67x = 40,103,825,726.79
  5. Step 5: Solve for x
    x = 40,103,825,726.79/228,920.67
  6. Step 6: Final answer
    x = 175,186.56

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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.