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Finding the Fourth Proportional to 442,981.35, 664,481.44 and 158,690.38

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Solution

The fourth proportional to 442,981.35, 664,481.44 and 158,690.38 is: 238,038.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,981.35 : 664,481.44 = 158,690.38 : x
  2. Step 2: Convert to fraction form
    442,981.35/664,481.44 = 158,690.38/x
  3. Step 3: Cross multiply
    442,981.35x = 664,481.44 × 158,690.38
  4. Step 4: Simplify right side
    442,981.35x = 105,446,812,216.55
  5. Step 5: Solve for x
    x = 105,446,812,216.55/442,981.35
  6. Step 6: Final answer
    x = 238,038.94

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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.