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Finding the Fourth Proportional to 493,611.30, 681,110.10 and 278,747.10

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Solution

The fourth proportional to 493,611.30, 681,110.10 and 278,747.10 is: 384,629.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,611.30 : 681,110.10 = 278,747.10 : x
  2. Step 2: Convert to fraction form
    493,611.30/681,110.10 = 278,747.10/x
  3. Step 3: Cross multiply
    493,611.30x = 681,110.10 × 278,747.10
  4. Step 4: Simplify right side
    493,611.30x = 189,857,465,155.71
  5. Step 5: Solve for x
    x = 189,857,465,155.71/493,611.30
  6. Step 6: Final answer
    x = 384,629.50

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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.