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Finding the Fourth Proportional to 208,318.05, 312,590.83 and 88,356.34

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Solution

The fourth proportional to 208,318.05, 312,590.83 and 88,356.34 is: 132,582.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,318.05 : 312,590.83 = 88,356.34 : x
  2. Step 2: Convert to fraction form
    208,318.05/312,590.83 = 88,356.34/x
  3. Step 3: Cross multiply
    208,318.05x = 312,590.83 × 88,356.34
  4. Step 4: Simplify right side
    208,318.05x = 27,619,381,656.36
  5. Step 5: Solve for x
    x = 27,619,381,656.36/208,318.05
  6. Step 6: Final answer
    x = 132,582.76

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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.