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Finding the Fourth Proportional to 367,918.80, 551,878.20 and 190,480.20

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Solution

The fourth proportional to 367,918.80, 551,878.20 and 190,480.20 is: 285,720.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    367,918.80 : 551,878.20 = 190,480.20 : x
  2. Step 2: Convert to fraction form
    367,918.80/551,878.20 = 190,480.20/x
  3. Step 3: Cross multiply
    367,918.80x = 551,878.20 × 190,480.20
  4. Step 4: Simplify right side
    367,918.80x = 105,121,869,911.64
  5. Step 5: Solve for x
    x = 105,121,869,911.64/367,918.80
  6. Step 6: Final answer
    x = 285,720.30

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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.