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Finding the Fourth Proportional to 208,369.98, 312,598.77 and 68,117.58

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Solution

The fourth proportional to 208,369.98, 312,598.77 and 68,117.58 is: 102,190.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,369.98 : 312,598.77 = 68,117.58 : x
  2. Step 2: Convert to fraction form
    208,369.98/312,598.77 = 68,117.58/x
  3. Step 3: Cross multiply
    208,369.98x = 312,598.77 × 68,117.58
  4. Step 4: Simplify right side
    208,369.98x = 21,293,471,723.38
  5. Step 5: Solve for x
    x = 21,293,471,723.38/208,369.98
  6. Step 6: Final answer
    x = 102,190.69

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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.