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Finding the Fourth Proportional to 202,543.54, 279,115.41 and 145,847.86

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Solution

The fourth proportional to 202,543.54, 279,115.41 and 145,847.86 is: 200,985.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,543.54 : 279,115.41 = 145,847.86 : x
  2. Step 2: Convert to fraction form
    202,543.54/279,115.41 = 145,847.86/x
  3. Step 3: Cross multiply
    202,543.54x = 279,115.41 × 145,847.86
  4. Step 4: Simplify right side
    202,543.54x = 40,708,385,241.52
  5. Step 5: Solve for x
    x = 40,708,385,241.52/202,543.54
  6. Step 6: Final answer
    x = 200,985.85

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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.