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Finding the Fourth Proportional to 302,043, 453,065.94 and 80,427

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Solution

The fourth proportional to 302,043, 453,065.94 and 80,427 is: 120,640.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    302,043 : 453,065.94 = 80,427 : x
  2. Step 2: Convert to fraction form
    302,043/453,065.94 = 80,427/x
  3. Step 3: Cross multiply
    302,043x = 453,065.94 × 80,427
  4. Step 4: Simplify right side
    302,043x = 36,438,734,356.38
  5. Step 5: Solve for x
    x = 36,438,734,356.38/302,043
  6. Step 6: Final answer
    x = 120,640.88

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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.