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Finding the Fourth Proportional to 202,245.60, 279,154.44 and 117,390

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Solution

The fourth proportional to 202,245.60, 279,154.44 and 117,390 is: 162,030.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,245.60 : 279,154.44 = 117,390 : x
  2. Step 2: Convert to fraction form
    202,245.60/279,154.44 = 117,390/x
  3. Step 3: Cross multiply
    202,245.60x = 279,154.44 × 117,390
  4. Step 4: Simplify right side
    202,245.60x = 32,769,939,711.60
  5. Step 5: Solve for x
    x = 32,769,939,711.60/202,245.60
  6. Step 6: Final answer
    x = 162,030.42

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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.