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Finding the Fourth Proportional to 199,539.51, 299,309.31 and 133,109.43

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Solution

The fourth proportional to 199,539.51, 299,309.31 and 133,109.43 is: 199,664.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,539.51 : 299,309.31 = 133,109.43 : x
  2. Step 2: Convert to fraction form
    199,539.51/299,309.31 = 133,109.43/x
  3. Step 3: Cross multiply
    199,539.51x = 299,309.31 × 133,109.43
  4. Step 4: Simplify right side
    199,539.51x = 39,840,891,647.79
  5. Step 5: Solve for x
    x = 39,840,891,647.79/199,539.51
  6. Step 6: Final answer
    x = 199,664.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.