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Finding the Fourth Proportional to 387,259.38, 534,467.97 and 217,493.51

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Solution

The fourth proportional to 387,259.38, 534,467.97 and 217,493.51 is: 300,169.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,259.38 : 534,467.97 = 217,493.51 : x
  2. Step 2: Convert to fraction form
    387,259.38/534,467.97 = 217,493.51/x
  3. Step 3: Cross multiply
    387,259.38x = 534,467.97 × 217,493.51
  4. Step 4: Simplify right side
    387,259.38x = 116,243,312,105.54
  5. Step 5: Solve for x
    x = 116,243,312,105.54/387,259.38
  6. Step 6: Final answer
    x = 300,169.13

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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.