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Finding the Fourth Proportional to 302,519.80, 453,745.10 and 80,921.08

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Solution

The fourth proportional to 302,519.80, 453,745.10 and 80,921.08 is: 121,372.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    302,519.80 : 453,745.10 = 80,921.08 : x
  2. Step 2: Convert to fraction form
    302,519.80/453,745.10 = 80,921.08/x
  3. Step 3: Cross multiply
    302,519.80x = 453,745.10 × 80,921.08
  4. Step 4: Simplify right side
    302,519.80x = 36,717,543,536.71
  5. Step 5: Solve for x
    x = 36,717,543,536.71/302,519.80
  6. Step 6: Final answer
    x = 121,372.36

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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.