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Finding the Fourth Proportional to 399,801.60, 599,769.60 and 119,347.20

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Solution

The fourth proportional to 399,801.60, 599,769.60 and 119,347.20 is: 179,040.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,801.60 : 599,769.60 = 119,347.20 : x
  2. Step 2: Convert to fraction form
    399,801.60/599,769.60 = 119,347.20/x
  3. Step 3: Cross multiply
    399,801.60x = 599,769.60 × 119,347.20
  4. Step 4: Simplify right side
    399,801.60x = 71,580,822,405.12
  5. Step 5: Solve for x
    x = 71,580,822,405.12/399,801.60
  6. Step 6: Final answer
    x = 179,040.86

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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.