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Finding the Fourth Proportional to 665,495.20, 998,411.20 and 185,722.92

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Solution

The fourth proportional to 665,495.20, 998,411.20 and 185,722.92 is: 278,631.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,495.20 : 998,411.20 = 185,722.92 : x
  2. Step 2: Convert to fraction form
    665,495.20/998,411.20 = 185,722.92/x
  3. Step 3: Cross multiply
    665,495.20x = 998,411.20 × 185,722.92
  4. Step 4: Simplify right side
    665,495.20x = 185,427,843,424.70
  5. Step 5: Solve for x
    x = 185,427,843,424.70/665,495.20
  6. Step 6: Final answer
    x = 278,631.38

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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.