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Finding the Fourth Proportional to 191,249.76, 286,677 and 72,889.32

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Solution

The fourth proportional to 191,249.76, 286,677 and 72,889.32 is: 109,258.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,249.76 : 286,677 = 72,889.32 : x
  2. Step 2: Convert to fraction form
    191,249.76/286,677 = 72,889.32/x
  3. Step 3: Cross multiply
    191,249.76x = 286,677 × 72,889.32
  4. Step 4: Simplify right side
    191,249.76x = 20,895,691,589.64
  5. Step 5: Solve for x
    x = 20,895,691,589.64/191,249.76
  6. Step 6: Final answer
    x = 109,258.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.