Home / 271,919.86-407,887.83-129,780.11

Finding the Fourth Proportional to 271,919.86, 407,887.83 and 129,780.11

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Solution

The fourth proportional to 271,919.86, 407,887.83 and 129,780.11 is: 194,674.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    271,919.86 : 407,887.83 = 129,780.11 : x
  2. Step 2: Convert to fraction form
    271,919.86/407,887.83 = 129,780.11/x
  3. Step 3: Cross multiply
    271,919.86x = 407,887.83 × 129,780.11
  4. Step 4: Simplify right side
    271,919.86x = 52,935,727,445.06
  5. Step 5: Solve for x
    x = 52,935,727,445.06/271,919.86
  6. Step 6: Final answer
    x = 194,674.00

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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.