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Finding the Fourth Proportional to 392,950.20, 589,079.70 and 235,241.40

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Solution

The fourth proportional to 392,950.20, 589,079.70 and 235,241.40 is: 352,655.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,950.20 : 589,079.70 = 235,241.40 : x
  2. Step 2: Convert to fraction form
    392,950.20/589,079.70 = 235,241.40/x
  3. Step 3: Cross multiply
    392,950.20x = 589,079.70 × 235,241.40
  4. Step 4: Simplify right side
    392,950.20x = 138,575,933,339.58
  5. Step 5: Solve for x
    x = 138,575,933,339.58/392,950.20
  6. Step 6: Final answer
    x = 352,655.21

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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.