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Finding the Fourth Proportional to 228,076.80, 342,115.20 and 115,713.60

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Solution

The fourth proportional to 228,076.80, 342,115.20 and 115,713.60 is: 173,570.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,076.80 : 342,115.20 = 115,713.60 : x
  2. Step 2: Convert to fraction form
    228,076.80/342,115.20 = 115,713.60/x
  3. Step 3: Cross multiply
    228,076.80x = 342,115.20 × 115,713.60
  4. Step 4: Simplify right side
    228,076.80x = 39,587,381,406.72
  5. Step 5: Solve for x
    x = 39,587,381,406.72/228,076.80
  6. Step 6: Final answer
    x = 173,570.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.