Home / 228,979.59-315,785.12-142,946.52

Finding the Fourth Proportional to 228,979.59, 315,785.12 and 142,946.52

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Solution

The fourth proportional to 228,979.59, 315,785.12 and 142,946.52 is: 197,137.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,979.59 : 315,785.12 = 142,946.52 : x
  2. Step 2: Convert to fraction form
    228,979.59/315,785.12 = 142,946.52/x
  3. Step 3: Cross multiply
    228,979.59x = 315,785.12 × 142,946.52
  4. Step 4: Simplify right side
    228,979.59x = 45,140,383,257.05
  5. Step 5: Solve for x
    x = 45,140,383,257.05/228,979.59
  6. Step 6: Final answer
    x = 197,137.15

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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.