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Finding the Fourth Proportional to 208,980.56, 288,390.62 and 113,487.93

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Solution

The fourth proportional to 208,980.56, 288,390.62 and 113,487.93 is: 156,611.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,980.56 : 288,390.62 = 113,487.93 : x
  2. Step 2: Convert to fraction form
    208,980.56/288,390.62 = 113,487.93/x
  3. Step 3: Cross multiply
    208,980.56x = 288,390.62 × 113,487.93
  4. Step 4: Simplify right side
    208,980.56x = 32,728,854,778.94
  5. Step 5: Solve for x
    x = 32,728,854,778.94/208,980.56
  6. Step 6: Final answer
    x = 156,611.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.