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Finding the Fourth Proportional to 202,197.20, 279,035.70 and 111,558.20

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Solution

The fourth proportional to 202,197.20, 279,035.70 and 111,558.20 is: 153,952.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,197.20 : 279,035.70 = 111,558.20 : x
  2. Step 2: Convert to fraction form
    202,197.20/279,035.70 = 111,558.20/x
  3. Step 3: Cross multiply
    202,197.20x = 279,035.70 × 111,558.20
  4. Step 4: Simplify right side
    202,197.20x = 31,128,720,427.74
  5. Step 5: Solve for x
    x = 31,128,720,427.74/202,197.20
  6. Step 6: Final answer
    x = 153,952.28

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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.