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Finding the Fourth Proportional to 419,225.60, 628,789.80 and 119,752.40

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Solution

The fourth proportional to 419,225.60, 628,789.80 and 119,752.40 is: 179,614.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,225.60 : 628,789.80 = 119,752.40 : x
  2. Step 2: Convert to fraction form
    419,225.60/628,789.80 = 119,752.40/x
  3. Step 3: Cross multiply
    419,225.60x = 628,789.80 × 119,752.40
  4. Step 4: Simplify right side
    419,225.60x = 75,299,087,645.52
  5. Step 5: Solve for x
    x = 75,299,087,645.52/419,225.60
  6. Step 6: Final answer
    x = 179,614.72

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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.