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Finding the Fourth Proportional to 439,912.20, 660,041.10 and 173,627.40

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Solution

The fourth proportional to 439,912.20, 660,041.10 and 173,627.40 is: 260,509.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,912.20 : 660,041.10 = 173,627.40 : x
  2. Step 2: Convert to fraction form
    439,912.20/660,041.10 = 173,627.40/x
  3. Step 3: Cross multiply
    439,912.20x = 660,041.10 × 173,627.40
  4. Step 4: Simplify right side
    439,912.20x = 114,601,220,086.14
  5. Step 5: Solve for x
    x = 114,601,220,086.14/439,912.20
  6. Step 6: Final answer
    x = 260,509.30

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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.