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Finding the Fourth Proportional to 393,325.46, 589,991.60 and 127,086

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Solution

The fourth proportional to 393,325.46, 589,991.60 and 127,086 is: 190,630.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,325.46 : 589,991.60 = 127,086 : x
  2. Step 2: Convert to fraction form
    393,325.46/589,991.60 = 127,086/x
  3. Step 3: Cross multiply
    393,325.46x = 589,991.60 × 127,086
  4. Step 4: Simplify right side
    393,325.46x = 74,979,671,842.17
  5. Step 5: Solve for x
    x = 74,979,671,842.17/393,325.46
  6. Step 6: Final answer
    x = 190,630.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.