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Finding the Fourth Proportional to 222,455.91, 306,987.60 and 120,479.07

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Solution

The fourth proportional to 222,455.91, 306,987.60 and 120,479.07 is: 166,260.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,455.91 : 306,987.60 = 120,479.07 : x
  2. Step 2: Convert to fraction form
    222,455.91/306,987.60 = 120,479.07/x
  3. Step 3: Cross multiply
    222,455.91x = 306,987.60 × 120,479.07
  4. Step 4: Simplify right side
    222,455.91x = 36,985,580,549.53
  5. Step 5: Solve for x
    x = 36,985,580,549.53/222,455.91
  6. Step 6: Final answer
    x = 166,260.27

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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.