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Finding the Fourth Proportional to 302,947.20, 454,420.80 and 162,979.20

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Solution

The fourth proportional to 302,947.20, 454,420.80 and 162,979.20 is: 244,468.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    302,947.20 : 454,420.80 = 162,979.20 : x
  2. Step 2: Convert to fraction form
    302,947.20/454,420.80 = 162,979.20/x
  3. Step 3: Cross multiply
    302,947.20x = 454,420.80 × 162,979.20
  4. Step 4: Simplify right side
    302,947.20x = 74,061,138,447.36
  5. Step 5: Solve for x
    x = 74,061,138,447.36/302,947.20
  6. Step 6: Final answer
    x = 244,468.80

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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.