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Finding the Fourth Proportional to 302,506.76, 453,760.14 and 80,885

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Solution

The fourth proportional to 302,506.76, 453,760.14 and 80,885 is: 121,327.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    302,506.76 : 453,760.14 = 80,885 : x
  2. Step 2: Convert to fraction form
    302,506.76/453,760.14 = 80,885/x
  3. Step 3: Cross multiply
    302,506.76x = 453,760.14 × 80,885
  4. Step 4: Simplify right side
    302,506.76x = 36,702,388,923.90
  5. Step 5: Solve for x
    x = 36,702,388,923.90/302,506.76
  6. Step 6: Final answer
    x = 121,327.50

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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.