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Finding the Fourth Proportional to 215,699.91, 323,550.68 and 65,939.62

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Solution

The fourth proportional to 215,699.91, 323,550.68 and 65,939.62 is: 98,909.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,699.91 : 323,550.68 = 65,939.62 : x
  2. Step 2: Convert to fraction form
    215,699.91/323,550.68 = 65,939.62/x
  3. Step 3: Cross multiply
    215,699.91x = 323,550.68 × 65,939.62
  4. Step 4: Simplify right side
    215,699.91x = 21,334,808,889.94
  5. Step 5: Solve for x
    x = 21,334,808,889.94/215,699.91
  6. Step 6: Final answer
    x = 98,909.68

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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.