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Finding the Fourth Proportional to 368,401.80, 552,894.30 and 143,869.80

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Solution

The fourth proportional to 368,401.80, 552,894.30 and 143,869.80 is: 215,918.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,401.80 : 552,894.30 = 143,869.80 : x
  2. Step 2: Convert to fraction form
    368,401.80/552,894.30 = 143,869.80/x
  3. Step 3: Cross multiply
    368,401.80x = 552,894.30 × 143,869.80
  4. Step 4: Simplify right side
    368,401.80x = 79,544,792,362.14
  5. Step 5: Solve for x
    x = 79,544,792,362.14/368,401.80
  6. Step 6: Final answer
    x = 215,918.58

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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.