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Finding the Fourth Proportional to 368,378.40, 551,185.20 and 335,200.80

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Solution

The fourth proportional to 368,378.40, 551,185.20 and 335,200.80 is: 501,543.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,378.40 : 551,185.20 = 335,200.80 : x
  2. Step 2: Convert to fraction form
    368,378.40/551,185.20 = 335,200.80/x
  3. Step 3: Cross multiply
    368,378.40x = 551,185.20 × 335,200.80
  4. Step 4: Simplify right side
    368,378.40x = 184,757,719,988.16
  5. Step 5: Solve for x
    x = 184,757,719,988.16/368,378.40
  6. Step 6: Final answer
    x = 501,543.30

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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.