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Finding the Fourth Proportional to 392,955.20, 589,087.20 and 235,246.40

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Solution

The fourth proportional to 392,955.20, 589,087.20 and 235,246.40 is: 352,662.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,955.20 : 589,087.20 = 235,246.40 : x
  2. Step 2: Convert to fraction form
    392,955.20/589,087.20 = 235,246.40/x
  3. Step 3: Cross multiply
    392,955.20x = 589,087.20 × 235,246.40
  4. Step 4: Simplify right side
    392,955.20x = 138,580,643,086.08
  5. Step 5: Solve for x
    x = 138,580,643,086.08/392,955.20
  6. Step 6: Final answer
    x = 352,662.70

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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.