Home / 279,730.90-418,612.20-256,111.30

Finding the Fourth Proportional to 279,730.90, 418,612.20 and 256,111.30

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Solution

The fourth proportional to 279,730.90, 418,612.20 and 256,111.30 is: 383,265.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,730.90 : 418,612.20 = 256,111.30 : x
  2. Step 2: Convert to fraction form
    279,730.90/418,612.20 = 256,111.30/x
  3. Step 3: Cross multiply
    279,730.90x = 418,612.20 × 256,111.30
  4. Step 4: Simplify right side
    279,730.90x = 107,211,314,737.86
  5. Step 5: Solve for x
    x = 107,211,314,737.86/279,730.90
  6. Step 6: Final answer
    x = 383,265.90

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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.