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Finding the Fourth Proportional to 215,298.15, 322,909.97 and 65,502.15

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Solution

The fourth proportional to 215,298.15, 322,909.97 and 65,502.15 is: 98,241.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,298.15 : 322,909.97 = 65,502.15 : x
  2. Step 2: Convert to fraction form
    215,298.15/322,909.97 = 65,502.15/x
  3. Step 3: Cross multiply
    215,298.15x = 322,909.97 × 65,502.15
  4. Step 4: Simplify right side
    215,298.15x = 21,151,296,963.92
  5. Step 5: Solve for x
    x = 21,151,296,963.92/215,298.15
  6. Step 6: Final answer
    x = 98,241.89

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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.