Home / 378,828.72-568,075.68-142,005.27

Finding the Fourth Proportional to 378,828.72, 568,075.68 and 142,005.27

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Solution

The fourth proportional to 378,828.72, 568,075.68 and 142,005.27 is: 212,945.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,828.72 : 568,075.68 = 142,005.27 : x
  2. Step 2: Convert to fraction form
    378,828.72/568,075.68 = 142,005.27/x
  3. Step 3: Cross multiply
    378,828.72x = 568,075.68 × 142,005.27
  4. Step 4: Simplify right side
    378,828.72x = 80,669,740,318.83
  5. Step 5: Solve for x
    x = 80,669,740,318.83/378,828.72
  6. Step 6: Final answer
    x = 212,945.15

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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.