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Finding the Fourth Proportional to 202,939.20, 280,051.20 and 112,293.12

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Solution

The fourth proportional to 202,939.20, 280,051.20 and 112,293.12 is: 154,961.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,939.20 : 280,051.20 = 112,293.12 : x
  2. Step 2: Convert to fraction form
    202,939.20/280,051.20 = 112,293.12/x
  3. Step 3: Cross multiply
    202,939.20x = 280,051.20 × 112,293.12
  4. Step 4: Simplify right side
    202,939.20x = 31,447,823,007.74
  5. Step 5: Solve for x
    x = 31,447,823,007.74/202,939.20
  6. Step 6: Final answer
    x = 154,961.80

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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.