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Finding the Fourth Proportional to 302,180.80, 453,271.20 and 91,791.40

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Solution

The fourth proportional to 302,180.80, 453,271.20 and 91,791.40 is: 137,687.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    302,180.80 : 453,271.20 = 91,791.40 : x
  2. Step 2: Convert to fraction form
    302,180.80/453,271.20 = 91,791.40/x
  3. Step 3: Cross multiply
    302,180.80x = 453,271.20 × 91,791.40
  4. Step 4: Simplify right side
    302,180.80x = 41,606,398,027.68
  5. Step 5: Solve for x
    x = 41,606,398,027.68/302,180.80
  6. Step 6: Final answer
    x = 137,687.10

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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.