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Finding the Fourth Proportional to 208,987.53, 288,400.19 and 113,494.89

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Solution

The fourth proportional to 208,987.53, 288,400.19 and 113,494.89 is: 156,621.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,987.53 : 288,400.19 = 113,494.89 : x
  2. Step 2: Convert to fraction form
    208,987.53/288,400.19 = 113,494.89/x
  3. Step 3: Cross multiply
    208,987.53x = 288,400.19 × 113,494.89
  4. Step 4: Simplify right side
    208,987.53x = 32,731,947,272.55
  5. Step 5: Solve for x
    x = 32,731,947,272.55/208,987.53
  6. Step 6: Final answer
    x = 156,621.53

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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.