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Finding the Fourth Proportional to 208,987.03, 288,399.49 and 113,494.39

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Solution

The fourth proportional to 208,987.03, 288,399.49 and 113,494.39 is: 156,620.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,987.03 : 288,399.49 = 113,494.39 : x
  2. Step 2: Convert to fraction form
    208,987.03/288,399.49 = 113,494.39/x
  3. Step 3: Cross multiply
    208,987.03x = 288,399.49 × 113,494.39
  4. Step 4: Simplify right side
    208,987.03x = 32,731,724,193.86
  5. Step 5: Solve for x
    x = 32,731,724,193.86/208,987.03
  6. Step 6: Final answer
    x = 156,620.84

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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.