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Finding the Fourth Proportional to 660,285.38, 990,139.66 and 233,679.42

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Solution

The fourth proportional to 660,285.38, 990,139.66 and 233,679.42 is: 350,417.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,285.38 : 990,139.66 = 233,679.42 : x
  2. Step 2: Convert to fraction form
    660,285.38/990,139.66 = 233,679.42/x
  3. Step 3: Cross multiply
    660,285.38x = 990,139.66 × 233,679.42
  4. Step 4: Simplify right side
    660,285.38x = 231,375,260,883.60
  5. Step 5: Solve for x
    x = 231,375,260,883.60/660,285.38
  6. Step 6: Final answer
    x = 350,417.06

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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.