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Finding the Fourth Proportional to 228,740.34, 315,657.84 and 126,765.46

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Solution

The fourth proportional to 228,740.34, 315,657.84 and 126,765.46 is: 174,934.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,740.34 : 315,657.84 = 126,765.46 : x
  2. Step 2: Convert to fraction form
    228,740.34/315,657.84 = 126,765.46/x
  3. Step 3: Cross multiply
    228,740.34x = 315,657.84 × 126,765.46
  4. Step 4: Simplify right side
    228,740.34x = 40,014,511,290.21
  5. Step 5: Solve for x
    x = 40,014,511,290.21/228,740.34
  6. Step 6: Final answer
    x = 174,934.21

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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.