Home / 387,268.57-534,429.35-215,185.86

Finding the Fourth Proportional to 387,268.57, 534,429.35 and 215,185.86

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Solution

The fourth proportional to 387,268.57, 534,429.35 and 215,185.86 is: 296,955.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,268.57 : 534,429.35 = 215,185.86 : x
  2. Step 2: Convert to fraction form
    387,268.57/534,429.35 = 215,185.86/x
  3. Step 3: Cross multiply
    387,268.57x = 534,429.35 × 215,185.86
  4. Step 4: Simplify right side
    387,268.57x = 115,001,638,213.06
  5. Step 5: Solve for x
    x = 115,001,638,213.06/387,268.57
  6. Step 6: Final answer
    x = 296,955.78

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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.