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Finding the Fourth Proportional to 208,160.86, 312,252.64 and 65,995.85

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Solution

The fourth proportional to 208,160.86, 312,252.64 and 65,995.85 is: 98,997.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,160.86 : 312,252.64 = 65,995.85 : x
  2. Step 2: Convert to fraction form
    208,160.86/312,252.64 = 65,995.85/x
  3. Step 3: Cross multiply
    208,160.86x = 312,252.64 × 65,995.85
  4. Step 4: Simplify right side
    208,160.86x = 20,607,376,500.30
  5. Step 5: Solve for x
    x = 20,607,376,500.30/208,160.86
  6. Step 6: Final answer
    x = 98,997.37

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1.5x scale

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.