Home / 318,223.44-439,039.05-197,321.22

Finding the Fourth Proportional to 318,223.44, 439,039.05 and 197,321.22

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Solution

The fourth proportional to 318,223.44, 439,039.05 and 197,321.22 is: 272,235.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,223.44 : 439,039.05 = 197,321.22 : x
  2. Step 2: Convert to fraction form
    318,223.44/439,039.05 = 197,321.22/x
  3. Step 3: Cross multiply
    318,223.44x = 439,039.05 × 197,321.22
  4. Step 4: Simplify right side
    318,223.44x = 86,631,720,973.64
  5. Step 5: Solve for x
    x = 86,631,720,973.64/318,223.44
  6. Step 6: Final answer
    x = 272,235.51

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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.