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Finding the Fourth Proportional to 278,563.01, 384,426.15 and 157,701.83

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Solution

The fourth proportional to 278,563.01, 384,426.15 and 157,701.83 is: 217,633.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,563.01 : 384,426.15 = 157,701.83 : x
  2. Step 2: Convert to fraction form
    278,563.01/384,426.15 = 157,701.83/x
  3. Step 3: Cross multiply
    278,563.01x = 384,426.15 × 157,701.83
  4. Step 4: Simplify right side
    278,563.01x = 60,624,707,354.85
  5. Step 5: Solve for x
    x = 60,624,707,354.85/278,563.01
  6. Step 6: Final answer
    x = 217,633.73

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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.