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Finding the Fourth Proportional to 660,007.60, 990,010.44 and 239,282.80

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Solution

The fourth proportional to 660,007.60, 990,010.44 and 239,282.80 is: 358,923.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,007.60 : 990,010.44 = 239,282.80 : x
  2. Step 2: Convert to fraction form
    660,007.60/990,010.44 = 239,282.80/x
  3. Step 3: Cross multiply
    660,007.60x = 990,010.44 × 239,282.80
  4. Step 4: Simplify right side
    660,007.60x = 236,892,470,112.43
  5. Step 5: Solve for x
    x = 236,892,470,112.43/660,007.60
  6. Step 6: Final answer
    x = 358,923.85

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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.