Home / 278,312.72-383,834.20-213,937.92

Finding the Fourth Proportional to 278,312.72, 383,834.20 and 213,937.92

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Solution

The fourth proportional to 278,312.72, 383,834.20 and 213,937.92 is: 295,051.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,312.72 : 383,834.20 = 213,937.92 : x
  2. Step 2: Convert to fraction form
    278,312.72/383,834.20 = 213,937.92/x
  3. Step 3: Cross multiply
    278,312.72x = 383,834.20 × 213,937.92
  4. Step 4: Simplify right side
    278,312.72x = 82,116,690,372.86
  5. Step 5: Solve for x
    x = 82,116,690,372.86/278,312.72
  6. Step 6: Final answer
    x = 295,051.88

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1.5x scale

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.