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Finding the Fourth Proportional to 385,495.74, 532,039.79 and 222,120.97

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Solution

The fourth proportional to 385,495.74, 532,039.79 and 222,120.97 is: 306,559.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,495.74 : 532,039.79 = 222,120.97 : x
  2. Step 2: Convert to fraction form
    385,495.74/532,039.79 = 222,120.97/x
  3. Step 3: Cross multiply
    385,495.74x = 532,039.79 × 222,120.97
  4. Step 4: Simplify right side
    385,495.74x = 118,177,193,458.60
  5. Step 5: Solve for x
    x = 118,177,193,458.60/385,495.74
  6. Step 6: Final answer
    x = 306,559.01

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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.