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Finding the Fourth Proportional to 368,009.20, 551,430.60 and 273,530.80

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Solution

The fourth proportional to 368,009.20, 551,430.60 and 273,530.80 is: 409,862.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,009.20 : 551,430.60 = 273,530.80 : x
  2. Step 2: Convert to fraction form
    368,009.20/551,430.60 = 273,530.80/x
  3. Step 3: Cross multiply
    368,009.20x = 551,430.60 × 273,530.80
  4. Step 4: Simplify right side
    368,009.20x = 150,833,253,162.48
  5. Step 5: Solve for x
    x = 150,833,253,162.48/368,009.20
  6. Step 6: Final answer
    x = 409,862.72

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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.