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Finding the Fourth Proportional to 331,499.40, 497,249.10 and 191,531.40

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Solution

The fourth proportional to 331,499.40, 497,249.10 and 191,531.40 is: 287,297.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,499.40 : 497,249.10 = 191,531.40 : x
  2. Step 2: Convert to fraction form
    331,499.40/497,249.10 = 191,531.40/x
  3. Step 3: Cross multiply
    331,499.40x = 497,249.10 × 191,531.40
  4. Step 4: Simplify right side
    331,499.40x = 95,238,816,271.74
  5. Step 5: Solve for x
    x = 95,238,816,271.74/331,499.40
  6. Step 6: Final answer
    x = 287,297.10

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Similar ratio
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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.