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Finding the Fourth Proportional to 368,112.80, 551,845.20 and 249,399.20

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Solution

The fourth proportional to 368,112.80, 551,845.20 and 249,399.20 is: 373,879.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,112.80 : 551,845.20 = 249,399.20 : x
  2. Step 2: Convert to fraction form
    368,112.80/551,845.20 = 249,399.20/x
  3. Step 3: Cross multiply
    368,112.80x = 551,845.20 × 249,399.20
  4. Step 4: Simplify right side
    368,112.80x = 137,629,751,403.84
  5. Step 5: Solve for x
    x = 137,629,751,403.84/368,112.80
  6. Step 6: Final answer
    x = 373,879.29

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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.