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Finding the Fourth Proportional to 302,542.80, 453,814.20 and 80,926.80

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Solution

The fourth proportional to 302,542.80, 453,814.20 and 80,926.80 is: 121,390.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    302,542.80 : 453,814.20 = 80,926.80 : x
  2. Step 2: Convert to fraction form
    302,542.80/453,814.20 = 80,926.80/x
  3. Step 3: Cross multiply
    302,542.80x = 453,814.20 × 80,926.80
  4. Step 4: Simplify right side
    302,542.80x = 36,725,731,000.56
  5. Step 5: Solve for x
    x = 36,725,731,000.56/302,542.80
  6. Step 6: Final answer
    x = 121,390.20

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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.