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Finding the Fourth Proportional to 387,552.27, 534,871.32 and 217,786.26

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Solution

The fourth proportional to 387,552.27, 534,871.32 and 217,786.26 is: 300,572.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,552.27 : 534,871.32 = 217,786.26 : x
  2. Step 2: Convert to fraction form
    387,552.27/534,871.32 = 217,786.26/x
  3. Step 3: Cross multiply
    387,552.27x = 534,871.32 × 217,786.26
  4. Step 4: Simplify right side
    387,552.27x = 116,487,624,364.06
  5. Step 5: Solve for x
    x = 116,487,624,364.06/387,552.27
  6. Step 6: Final answer
    x = 300,572.68

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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.