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Finding the Fourth Proportional to 445,273.92, 668,129.92 and 208,575.68

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Solution

The fourth proportional to 445,273.92, 668,129.92 and 208,575.68 is: 312,966.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,273.92 : 668,129.92 = 208,575.68 : x
  2. Step 2: Convert to fraction form
    445,273.92/668,129.92 = 208,575.68/x
  3. Step 3: Cross multiply
    445,273.92x = 668,129.92 × 208,575.68
  4. Step 4: Simplify right side
    445,273.92x = 139,355,652,392.35
  5. Step 5: Solve for x
    x = 139,355,652,392.35/445,273.92
  6. Step 6: Final answer
    x = 312,966.12

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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.