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Finding the Fourth Proportional to 442,866.20, 664,299.30 and 162,492.80

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Solution

The fourth proportional to 442,866.20, 664,299.30 and 162,492.80 is: 243,739.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,866.20 : 664,299.30 = 162,492.80 : x
  2. Step 2: Convert to fraction form
    442,866.20/664,299.30 = 162,492.80/x
  3. Step 3: Cross multiply
    442,866.20x = 664,299.30 × 162,492.80
  4. Step 4: Simplify right side
    442,866.20x = 107,943,853,295.04
  5. Step 5: Solve for x
    x = 107,943,853,295.04/442,866.20
  6. Step 6: Final answer
    x = 243,739.20

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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.