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Finding the Fourth Proportional to 215,308.76, 322,963.86 and 65,550.20

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Solution

The fourth proportional to 215,308.76, 322,963.86 and 65,550.20 is: 98,325.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,308.76 : 322,963.86 = 65,550.20 : x
  2. Step 2: Convert to fraction form
    215,308.76/322,963.86 = 65,550.20/x
  3. Step 3: Cross multiply
    215,308.76x = 322,963.86 × 65,550.20
  4. Step 4: Simplify right side
    215,308.76x = 21,170,345,615.77
  5. Step 5: Solve for x
    x = 21,170,345,615.77/215,308.76
  6. Step 6: Final answer
    x = 98,325.52

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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.