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Finding the Fourth Proportional to 660,233.20, 990,234.60 and 239,292.40

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Solution

The fourth proportional to 660,233.20, 990,234.60 and 239,292.40 is: 358,896.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,233.20 : 990,234.60 = 239,292.40 : x
  2. Step 2: Convert to fraction form
    660,233.20/990,234.60 = 239,292.40/x
  3. Step 3: Cross multiply
    660,233.20x = 990,234.60 × 239,292.40
  4. Step 4: Simplify right side
    660,233.20x = 236,955,613,997.04
  5. Step 5: Solve for x
    x = 236,955,613,997.04/660,233.20
  6. Step 6: Final answer
    x = 358,896.85

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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.