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Finding the Fourth Proportional to 665,315.92, 997,973.77 and 159,876.90

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Solution

The fourth proportional to 665,315.92, 997,973.77 and 159,876.90 is: 239,815.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,315.92 : 997,973.77 = 159,876.90 : x
  2. Step 2: Convert to fraction form
    665,315.92/997,973.77 = 159,876.90/x
  3. Step 3: Cross multiply
    665,315.92x = 997,973.77 × 159,876.90
  4. Step 4: Simplify right side
    665,315.92x = 159,552,952,229.22
  5. Step 5: Solve for x
    x = 159,552,952,229.22/665,315.92
  6. Step 6: Final answer
    x = 239,815.32

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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.