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Finding the Fourth Proportional to 387,244.94, 534,391.29 and 215,164.49

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Solution

The fourth proportional to 387,244.94, 534,391.29 and 215,164.49 is: 296,923.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,244.94 : 534,391.29 = 215,164.49 : x
  2. Step 2: Convert to fraction form
    387,244.94/534,391.29 = 215,164.49/x
  3. Step 3: Cross multiply
    387,244.94x = 534,391.29 × 215,164.49
  4. Step 4: Simplify right side
    387,244.94x = 114,982,026,701.34
  5. Step 5: Solve for x
    x = 114,982,026,701.34/387,244.94
  6. Step 6: Final answer
    x = 296,923.26

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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.