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Finding the Fourth Proportional to 439,846.20, 606,989.70 and 248,896.80

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Solution

The fourth proportional to 439,846.20, 606,989.70 and 248,896.80 is: 343,478.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,846.20 : 606,989.70 = 248,896.80 : x
  2. Step 2: Convert to fraction form
    439,846.20/606,989.70 = 248,896.80/x
  3. Step 3: Cross multiply
    439,846.20x = 606,989.70 × 248,896.80
  4. Step 4: Simplify right side
    439,846.20x = 151,077,793,962.96
  5. Step 5: Solve for x
    x = 151,077,793,962.96/439,846.20
  6. Step 6: Final answer
    x = 343,478.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.