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Finding the Fourth Proportional to 280,369.83, 386,896.89 and 159,499.80

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Solution

The fourth proportional to 280,369.83, 386,896.89 and 159,499.80 is: 220,102.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,369.83 : 386,896.89 = 159,499.80 : x
  2. Step 2: Convert to fraction form
    280,369.83/386,896.89 = 159,499.80/x
  3. Step 3: Cross multiply
    280,369.83x = 386,896.89 × 159,499.80
  4. Step 4: Simplify right side
    280,369.83x = 61,709,976,575.62
  5. Step 5: Solve for x
    x = 61,709,976,575.62/280,369.83
  6. Step 6: Final answer
    x = 220,102.06

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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.