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Finding the Fourth Proportional to 368,445.80, 552,960.30 and 143,913.80

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Solution

The fourth proportional to 368,445.80, 552,960.30 and 143,913.80 is: 215,984.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,445.80 : 552,960.30 = 143,913.80 : x
  2. Step 2: Convert to fraction form
    368,445.80/552,960.30 = 143,913.80/x
  3. Step 3: Cross multiply
    368,445.80x = 552,960.30 × 143,913.80
  4. Step 4: Simplify right side
    368,445.80x = 79,578,618,022.14
  5. Step 5: Solve for x
    x = 79,578,618,022.14/368,445.80
  6. Step 6: Final answer
    x = 215,984.60

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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.