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Finding the Fourth Proportional to 202,628.90, 279,628.21 and 111,984.83

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Solution

The fourth proportional to 202,628.90, 279,628.21 and 111,984.83 is: 154,539.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,628.90 : 279,628.21 = 111,984.83 : x
  2. Step 2: Convert to fraction form
    202,628.90/279,628.21 = 111,984.83/x
  3. Step 3: Cross multiply
    202,628.90x = 279,628.21 × 111,984.83
  4. Step 4: Simplify right side
    202,628.90x = 31,314,117,979.16
  5. Step 5: Solve for x
    x = 31,314,117,979.16/202,628.90
  6. Step 6: Final answer
    x = 154,539.25

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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.