Home / 259,878.76-389,832.72-72,904.84

Finding the Fourth Proportional to 259,878.76, 389,832.72 and 72,904.84

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Solution

The fourth proportional to 259,878.76, 389,832.72 and 72,904.84 is: 109,361.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,878.76 : 389,832.72 = 72,904.84 : x
  2. Step 2: Convert to fraction form
    259,878.76/389,832.72 = 72,904.84/x
  3. Step 3: Cross multiply
    259,878.76x = 389,832.72 × 72,904.84
  4. Step 4: Simplify right side
    259,878.76x = 28,420,692,078.36
  5. Step 5: Solve for x
    x = 28,420,692,078.36/259,878.76
  6. Step 6: Final answer
    x = 109,361.35

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.