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Finding the Fourth Proportional to 302,469.78, 453,670.11 and 80,871.06

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Solution

The fourth proportional to 302,469.78, 453,670.11 and 80,871.06 is: 121,297.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    302,469.78 : 453,670.11 = 80,871.06 : x
  2. Step 2: Convert to fraction form
    302,469.78/453,670.11 = 80,871.06/x
  3. Step 3: Cross multiply
    302,469.78x = 453,670.11 × 80,871.06
  4. Step 4: Simplify right side
    302,469.78x = 36,688,782,686.02
  5. Step 5: Solve for x
    x = 36,688,782,686.02/302,469.78
  6. Step 6: Final answer
    x = 121,297.35

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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.