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Finding the Fourth Proportional to 208,163.79, 312,239.02 and 88,188.72

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Solution

The fourth proportional to 208,163.79, 312,239.02 and 88,188.72 is: 132,280.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,163.79 : 312,239.02 = 88,188.72 : x
  2. Step 2: Convert to fraction form
    208,163.79/312,239.02 = 88,188.72/x
  3. Step 3: Cross multiply
    208,163.79x = 312,239.02 × 88,188.72
  4. Step 4: Simplify right side
    208,163.79x = 27,535,960,544.31
  5. Step 5: Solve for x
    x = 27,535,960,544.31/208,163.79
  6. Step 6: Final answer
    x = 132,280.26

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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.