Home / 222,455.41-306,986.91-120,478.57

Finding the Fourth Proportional to 222,455.41, 306,986.91 and 120,478.57

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Solution

The fourth proportional to 222,455.41, 306,986.91 and 120,478.57 is: 166,259.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,455.41 : 306,986.91 = 120,478.57 : x
  2. Step 2: Convert to fraction form
    222,455.41/306,986.91 = 120,478.57/x
  3. Step 3: Cross multiply
    222,455.41x = 306,986.91 × 120,478.57
  4. Step 4: Simplify right side
    222,455.41x = 36,985,343,925.52
  5. Step 5: Solve for x
    x = 36,985,343,925.52/222,455.41
  6. Step 6: Final answer
    x = 166,259.58

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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.