Home / 387,081.14-534,205.65-215,032.56

Finding the Fourth Proportional to 387,081.14, 534,205.65 and 215,032.56

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Solution

The fourth proportional to 387,081.14, 534,205.65 and 215,032.56 is: 296,763.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,081.14 : 534,205.65 = 215,032.56 : x
  2. Step 2: Convert to fraction form
    387,081.14/534,205.65 = 215,032.56/x
  3. Step 3: Cross multiply
    387,081.14x = 534,205.65 × 215,032.56
  4. Step 4: Simplify right side
    387,081.14x = 114,871,608,485.96
  5. Step 5: Solve for x
    x = 114,871,608,485.96/387,081.14
  6. Step 6: Final answer
    x = 296,763.64

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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.