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Finding the Fourth Proportional to 660,300.60, 990,450.90 and 239,521.80

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Solution

The fourth proportional to 660,300.60, 990,450.90 and 239,521.80 is: 359,282.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,300.60 : 990,450.90 = 239,521.80 : x
  2. Step 2: Convert to fraction form
    660,300.60/990,450.90 = 239,521.80/x
  3. Step 3: Cross multiply
    660,300.60x = 990,450.90 × 239,521.80
  4. Step 4: Simplify right side
    660,300.60x = 237,234,582,379.62
  5. Step 5: Solve for x
    x = 237,234,582,379.62/660,300.60
  6. Step 6: Final answer
    x = 359,282.70

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Similar ratio
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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.