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Finding the Fourth Proportional to 201,860.80, 303,447.30 and 172,992.40

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Solution

The fourth proportional to 201,860.80, 303,447.30 and 172,992.40 is: 260,050.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,860.80 : 303,447.30 = 172,992.40 : x
  2. Step 2: Convert to fraction form
    201,860.80/303,447.30 = 172,992.40/x
  3. Step 3: Cross multiply
    201,860.80x = 303,447.30 × 172,992.40
  4. Step 4: Simplify right side
    201,860.80x = 52,494,076,700.52
  5. Step 5: Solve for x
    x = 52,494,076,700.52/201,860.80
  6. Step 6: Final answer
    x = 260,050.87

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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.