Home / 318,007.44-438,387.96-222,216.72

Finding the Fourth Proportional to 318,007.44, 438,387.96 and 222,216.72

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Solution

The fourth proportional to 318,007.44, 438,387.96 and 222,216.72 is: 306,336.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,007.44 : 438,387.96 = 222,216.72 : x
  2. Step 2: Convert to fraction form
    318,007.44/438,387.96 = 222,216.72/x
  3. Step 3: Cross multiply
    318,007.44x = 438,387.96 × 222,216.72
  4. Step 4: Simplify right side
    318,007.44x = 97,417,134,558.69
  5. Step 5: Solve for x
    x = 97,417,134,558.69/318,007.44
  6. Step 6: Final answer
    x = 306,336.02

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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.