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Finding the Fourth Proportional to 302,462.80, 453,694.20 and 212,261.20

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Solution

The fourth proportional to 302,462.80, 453,694.20 and 212,261.20 is: 318,391.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    302,462.80 : 453,694.20 = 212,261.20 : x
  2. Step 2: Convert to fraction form
    302,462.80/453,694.20 = 212,261.20/x
  3. Step 3: Cross multiply
    302,462.80x = 453,694.20 × 212,261.20
  4. Step 4: Simplify right side
    302,462.80x = 96,301,675,325.04
  5. Step 5: Solve for x
    x = 96,301,675,325.04/302,462.80
  6. Step 6: Final answer
    x = 318,391.80

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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.