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Finding the Fourth Proportional to 660,291.90, 990,149.40 and 233,685.92

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Solution

The fourth proportional to 660,291.90, 990,149.40 and 233,685.92 is: 350,426.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,291.90 : 990,149.40 = 233,685.92 : x
  2. Step 2: Convert to fraction form
    660,291.90/990,149.40 = 233,685.92/x
  3. Step 3: Cross multiply
    660,291.90x = 990,149.40 × 233,685.92
  4. Step 4: Simplify right side
    660,291.90x = 231,383,973,476.45
  5. Step 5: Solve for x
    x = 231,383,973,476.45/660,291.90
  6. Step 6: Final answer
    x = 350,426.79

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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.