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Finding the Fourth Proportional to 202,420.20, 303,435.90 and 157,416.60

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Solution

The fourth proportional to 202,420.20, 303,435.90 and 157,416.60 is: 235,973.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,420.20 : 303,435.90 = 157,416.60 : x
  2. Step 2: Convert to fraction form
    202,420.20/303,435.90 = 157,416.60/x
  3. Step 3: Cross multiply
    202,420.20x = 303,435.90 × 157,416.60
  4. Step 4: Simplify right side
    202,420.20x = 47,765,847,695.94
  5. Step 5: Solve for x
    x = 47,765,847,695.94/202,420.20
  6. Step 6: Final answer
    x = 235,973.72

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.