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Finding the Fourth Proportional to 368,411.30, 552,908.55 and 143,879.30

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Solution

The fourth proportional to 368,411.30, 552,908.55 and 143,879.30 is: 215,932.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,411.30 : 552,908.55 = 143,879.30 : x
  2. Step 2: Convert to fraction form
    368,411.30/552,908.55 = 143,879.30/x
  3. Step 3: Cross multiply
    368,411.30x = 552,908.55 × 143,879.30
  4. Step 4: Simplify right side
    368,411.30x = 79,552,095,138.02
  5. Step 5: Solve for x
    x = 79,552,095,138.02/368,411.30
  6. Step 6: Final answer
    x = 215,932.83

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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.