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Finding the Fourth Proportional to 302,021.20, 453,031.80 and 91,658.80

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Solution

The fourth proportional to 302,021.20, 453,031.80 and 91,658.80 is: 137,488.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    302,021.20 : 453,031.80 = 91,658.80 : x
  2. Step 2: Convert to fraction form
    302,021.20/453,031.80 = 91,658.80/x
  3. Step 3: Cross multiply
    302,021.20x = 453,031.80 × 91,658.80
  4. Step 4: Simplify right side
    302,021.20x = 41,524,351,149.84
  5. Step 5: Solve for x
    x = 41,524,351,149.84/302,021.20
  6. Step 6: Final answer
    x = 137,488.20

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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.