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Finding the Fourth Proportional to 368,400.80, 552,892.80 and 143,868.80

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Solution

The fourth proportional to 368,400.80, 552,892.80 and 143,868.80 is: 215,917.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,400.80 : 552,892.80 = 143,868.80 : x
  2. Step 2: Convert to fraction form
    368,400.80/552,892.80 = 143,868.80/x
  3. Step 3: Cross multiply
    368,400.80x = 552,892.80 × 143,868.80
  4. Step 4: Simplify right side
    368,400.80x = 79,544,023,664.64
  5. Step 5: Solve for x
    x = 79,544,023,664.64/368,400.80
  6. Step 6: Final answer
    x = 215,917.08

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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.