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Finding the Fourth Proportional to 660,614.40, 991,310.40 and 239,932.80

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Solution

The fourth proportional to 660,614.40, 991,310.40 and 239,932.80 is: 360,040.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,614.40 : 991,310.40 = 239,932.80 : x
  2. Step 2: Convert to fraction form
    660,614.40/991,310.40 = 239,932.80/x
  3. Step 3: Cross multiply
    660,614.40x = 991,310.40 × 239,932.80
  4. Step 4: Simplify right side
    660,614.40x = 237,847,879,941.12
  5. Step 5: Solve for x
    x = 237,847,879,941.12/660,614.40
  6. Step 6: Final answer
    x = 360,040.41

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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.