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Finding the Fourth Proportional to 213,730.60, 320,660.08 and 63,975.76

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Solution

The fourth proportional to 213,730.60, 320,660.08 and 63,975.76 is: 95,982.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,730.60 : 320,660.08 = 63,975.76 : x
  2. Step 2: Convert to fraction form
    213,730.60/320,660.08 = 63,975.76/x
  3. Step 3: Cross multiply
    213,730.60x = 320,660.08 × 63,975.76
  4. Step 4: Simplify right side
    213,730.60x = 20,514,472,319.66
  5. Step 5: Solve for x
    x = 20,514,472,319.66/213,730.60
  6. Step 6: Final answer
    x = 95,982.85

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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.