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Finding the Fourth Proportional to 191,719.20, 287,578.80 and 180,832.80

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Solution

The fourth proportional to 191,719.20, 287,578.80 and 180,832.80 is: 271,249.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,719.20 : 287,578.80 = 180,832.80 : x
  2. Step 2: Convert to fraction form
    191,719.20/287,578.80 = 180,832.80/x
  3. Step 3: Cross multiply
    191,719.20x = 287,578.80 × 180,832.80
  4. Step 4: Simplify right side
    191,719.20x = 52,003,679,624.64
  5. Step 5: Solve for x
    x = 52,003,679,624.64/191,719.20
  6. Step 6: Final answer
    x = 271,249.20

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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.