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Finding the Fourth Proportional to 660,286.51, 990,141.33 and 233,680.60

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Solution

The fourth proportional to 660,286.51, 990,141.33 and 233,680.60 is: 350,418.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,286.51 : 990,141.33 = 233,680.60 : x
  2. Step 2: Convert to fraction form
    660,286.51/990,141.33 = 233,680.60/x
  3. Step 3: Cross multiply
    660,286.51x = 990,141.33 × 233,680.60
  4. Step 4: Simplify right side
    660,286.51x = 231,376,820,079.20
  5. Step 5: Solve for x
    x = 231,376,820,079.20/660,286.51
  6. Step 6: Final answer
    x = 350,418.82

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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.