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Finding the Fourth Proportional to 493,770.15, 681,444.77 and 278,949.65

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Solution

The fourth proportional to 493,770.15, 681,444.77 and 278,949.65 is: 384,974.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,770.15 : 681,444.77 = 278,949.65 : x
  2. Step 2: Convert to fraction form
    493,770.15/681,444.77 = 278,949.65/x
  3. Step 3: Cross multiply
    493,770.15x = 681,444.77 × 278,949.65
  4. Step 4: Simplify right side
    493,770.15x = 190,088,775,283.86
  5. Step 5: Solve for x
    x = 190,088,775,283.86/493,770.15
  6. Step 6: Final answer
    x = 384,974.21

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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.