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Finding the Fourth Proportional to 302,021.70, 453,032.55 and 91,659.30

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Solution

The fourth proportional to 302,021.70, 453,032.55 and 91,659.30 is: 137,488.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    302,021.70 : 453,032.55 = 91,659.30 : x
  2. Step 2: Convert to fraction form
    302,021.70/453,032.55 = 91,659.30/x
  3. Step 3: Cross multiply
    302,021.70x = 453,032.55 × 91,659.30
  4. Step 4: Simplify right side
    302,021.70x = 41,524,646,410.22
  5. Step 5: Solve for x
    x = 41,524,646,410.22/302,021.70
  6. Step 6: Final answer
    x = 137,488.95

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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.