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Finding the Fourth Proportional to 278,595.93, 384,451.61 and 151,268.61

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Solution

The fourth proportional to 278,595.93, 384,451.61 and 151,268.61 is: 208,744.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,595.93 : 384,451.61 = 151,268.61 : x
  2. Step 2: Convert to fraction form
    278,595.93/384,451.61 = 151,268.61/x
  3. Step 3: Cross multiply
    278,595.93x = 384,451.61 × 151,268.61
  4. Step 4: Simplify right side
    278,595.93x = 58,155,459,900.62
  5. Step 5: Solve for x
    x = 58,155,459,900.62/278,595.93
  6. Step 6: Final answer
    x = 208,744.83

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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.