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Finding the Fourth Proportional to 445,294.77, 668,835.57 and 265,730.49

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Solution

The fourth proportional to 445,294.77, 668,835.57 and 265,730.49 is: 399,128.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,294.77 : 668,835.57 = 265,730.49 : x
  2. Step 2: Convert to fraction form
    445,294.77/668,835.57 = 265,730.49/x
  3. Step 3: Cross multiply
    445,294.77x = 668,835.57 × 265,730.49
  4. Step 4: Simplify right side
    445,294.77x = 177,730,003,745.53
  5. Step 5: Solve for x
    x = 177,730,003,745.53/445,294.77
  6. Step 6: Final answer
    x = 399,128.88

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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.