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Finding the Fourth Proportional to 209,366.55, 288,929.52 and 113,873.90

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Solution

The fourth proportional to 209,366.55, 288,929.52 and 113,873.90 is: 157,147.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,366.55 : 288,929.52 = 113,873.90 : x
  2. Step 2: Convert to fraction form
    209,366.55/288,929.52 = 113,873.90/x
  3. Step 3: Cross multiply
    209,366.55x = 288,929.52 × 113,873.90
  4. Step 4: Simplify right side
    209,366.55x = 32,901,529,822.88
  5. Step 5: Solve for x
    x = 32,901,529,822.88/209,366.55
  6. Step 6: Final answer
    x = 157,147.98

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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.