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Finding the Fourth Proportional to 213,249.01, 319,918.62 and 80,130.42

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Solution

The fourth proportional to 213,249.01, 319,918.62 and 80,130.42 is: 120,212.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,249.01 : 319,918.62 = 80,130.42 : x
  2. Step 2: Convert to fraction form
    213,249.01/319,918.62 = 80,130.42/x
  3. Step 3: Cross multiply
    213,249.01x = 319,918.62 × 80,130.42
  4. Step 4: Simplify right side
    213,249.01x = 25,635,213,686.91
  5. Step 5: Solve for x
    x = 25,635,213,686.91/213,249.01
  6. Step 6: Final answer
    x = 120,212.58

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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.