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Finding the Fourth Proportional to 442,162.35, 663,372.72 and 142,636.32

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Solution

The fourth proportional to 442,162.35, 663,372.72 and 142,636.32 is: 213,996.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,162.35 : 663,372.72 = 142,636.32 : x
  2. Step 2: Convert to fraction form
    442,162.35/663,372.72 = 142,636.32/x
  3. Step 3: Cross multiply
    442,162.35x = 663,372.72 × 142,636.32
  4. Step 4: Simplify right side
    442,162.35x = 94,621,043,569.19
  5. Step 5: Solve for x
    x = 94,621,043,569.19/442,162.35
  6. Step 6: Final answer
    x = 213,996.16

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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.