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Finding the Fourth Proportional to 439,672.98, 659,287.71 and 313,240.98

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Solution

The fourth proportional to 439,672.98, 659,287.71 and 313,240.98 is: 469,703.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,672.98 : 659,287.71 = 313,240.98 : x
  2. Step 2: Convert to fraction form
    439,672.98/659,287.71 = 313,240.98/x
  3. Step 3: Cross multiply
    439,672.98x = 659,287.71 × 313,240.98
  4. Step 4: Simplify right side
    439,672.98x = 206,515,928,382.36
  5. Step 5: Solve for x
    x = 206,515,928,382.36/439,672.98
  6. Step 6: Final answer
    x = 469,703.48

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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.