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Finding the Fourth Proportional to 387,250.94, 534,456.42 and 217,485.07

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Solution

The fourth proportional to 387,250.94, 534,456.42 and 217,485.07 is: 300,157.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,250.94 : 534,456.42 = 217,485.07 : x
  2. Step 2: Convert to fraction form
    387,250.94/534,456.42 = 217,485.07/x
  3. Step 3: Cross multiply
    387,250.94x = 534,456.42 × 217,485.07
  4. Step 4: Simplify right side
    387,250.94x = 116,236,288,155.94
  5. Step 5: Solve for x
    x = 116,236,288,155.94/387,250.94
  6. Step 6: Final answer
    x = 300,157.54

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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.