Home / 442,721.08-663,687.15-162,172.72

Finding the Fourth Proportional to 442,721.08, 663,687.15 and 162,172.72

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Solution

The fourth proportional to 442,721.08, 663,687.15 and 162,172.72 is: 243,114.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,721.08 : 663,687.15 = 162,172.72 : x
  2. Step 2: Convert to fraction form
    442,721.08/663,687.15 = 162,172.72/x
  3. Step 3: Cross multiply
    442,721.08x = 663,687.15 × 162,172.72
  4. Step 4: Simplify right side
    442,721.08x = 107,631,950,344.55
  5. Step 5: Solve for x
    x = 107,631,950,344.55/442,721.08
  6. Step 6: Final answer
    x = 243,114.58

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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.