Home / 387,480.24-534,729.06-213,057.78

Finding the Fourth Proportional to 387,480.24, 534,729.06 and 213,057.78

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Solution

The fourth proportional to 387,480.24, 534,729.06 and 213,057.78 is: 294,023.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,480.24 : 534,729.06 = 213,057.78 : x
  2. Step 2: Convert to fraction form
    387,480.24/534,729.06 = 213,057.78/x
  3. Step 3: Cross multiply
    387,480.24x = 534,729.06 × 213,057.78
  4. Step 4: Simplify right side
    387,480.24x = 113,928,184,419.85
  5. Step 5: Solve for x
    x = 113,928,184,419.85/387,480.24
  6. Step 6: Final answer
    x = 294,023.21

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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.