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Finding the Fourth Proportional to 202,878.36, 279,969.48 and 112,227.12

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Solution

The fourth proportional to 202,878.36, 279,969.48 and 112,227.12 is: 154,871.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,878.36 : 279,969.48 = 112,227.12 : x
  2. Step 2: Convert to fraction form
    202,878.36/279,969.48 = 112,227.12/x
  3. Step 3: Cross multiply
    202,878.36x = 279,969.48 × 112,227.12
  4. Step 4: Simplify right side
    202,878.36x = 31,420,168,428.30
  5. Step 5: Solve for x
    x = 31,420,168,428.30/202,878.36
  6. Step 6: Final answer
    x = 154,871.96

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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.