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Finding the Fourth Proportional to 202,919.90, 280,037.72 and 112,274.39

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Solution

The fourth proportional to 202,919.90, 280,037.72 and 112,274.39 is: 154,943.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,919.90 : 280,037.72 = 112,274.39 : x
  2. Step 2: Convert to fraction form
    202,919.90/280,037.72 = 112,274.39/x
  3. Step 3: Cross multiply
    202,919.90x = 280,037.72 × 112,274.39
  4. Step 4: Simplify right side
    202,919.90x = 31,441,063,628.62
  5. Step 5: Solve for x
    x = 31,441,063,628.62/202,919.90
  6. Step 6: Final answer
    x = 154,943.22

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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.