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Finding the Fourth Proportional to 387,572.92, 534,847.26 and 217,806.64

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Solution

The fourth proportional to 387,572.92, 534,847.26 and 217,806.64 is: 300,571.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,572.92 : 534,847.26 = 217,806.64 : x
  2. Step 2: Convert to fraction form
    387,572.92/534,847.26 = 217,806.64/x
  3. Step 3: Cross multiply
    387,572.92x = 534,847.26 × 217,806.64
  4. Step 4: Simplify right side
    387,572.92x = 116,493,284,613.81
  5. Step 5: Solve for x
    x = 116,493,284,613.81/387,572.92
  6. Step 6: Final answer
    x = 300,571.27

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1.5x scale

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.