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Finding the Fourth Proportional to 288,078.93, 397,253.97 and 191,248.70

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Solution

The fourth proportional to 288,078.93, 397,253.97 and 191,248.70 is: 263,727.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,078.93 : 397,253.97 = 191,248.70 : x
  2. Step 2: Convert to fraction form
    288,078.93/397,253.97 = 191,248.70/x
  3. Step 3: Cross multiply
    288,078.93x = 397,253.97 × 191,248.70
  4. Step 4: Simplify right side
    288,078.93x = 75,974,303,346.07
  5. Step 5: Solve for x
    x = 75,974,303,346.07/288,078.93
  6. Step 6: Final answer
    x = 263,727.39

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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.