Home / 387,251.37-534,405.11-215,197.34

Finding the Fourth Proportional to 387,251.37, 534,405.11 and 215,197.34

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Solution

The fourth proportional to 387,251.37, 534,405.11 and 215,197.34 is: 296,971.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,251.37 : 534,405.11 = 215,197.34 : x
  2. Step 2: Convert to fraction form
    387,251.37/534,405.11 = 215,197.34/x
  3. Step 3: Cross multiply
    387,251.37x = 534,405.11 × 215,197.34
  4. Step 4: Simplify right side
    387,251.37x = 115,002,554,406.40
  5. Step 5: Solve for x
    x = 115,002,554,406.40/387,251.37
  6. Step 6: Final answer
    x = 296,971.33

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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.