Home / 381,403.20-526,361.40-220,265.04

Finding the Fourth Proportional to 381,403.20, 526,361.40 and 220,265.04

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Solution

The fourth proportional to 381,403.20, 526,361.40 and 220,265.04 is: 303,980.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,403.20 : 526,361.40 = 220,265.04 : x
  2. Step 2: Convert to fraction form
    381,403.20/526,361.40 = 220,265.04/x
  3. Step 3: Cross multiply
    381,403.20x = 526,361.40 × 220,265.04
  4. Step 4: Simplify right side
    381,403.20x = 115,939,014,825.46
  5. Step 5: Solve for x
    x = 115,939,014,825.46/381,403.20
  6. Step 6: Final answer
    x = 303,980.18

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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.