Home / 378,829.85-568,077.37-142,006.40

Finding the Fourth Proportional to 378,829.85, 568,077.37 and 142,006.40

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Solution

The fourth proportional to 378,829.85, 568,077.37 and 142,006.40 is: 212,946.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,829.85 : 568,077.37 = 142,006.40 : x
  2. Step 2: Convert to fraction form
    378,829.85/568,077.37 = 142,006.40/x
  3. Step 3: Cross multiply
    378,829.85x = 568,077.37 × 142,006.40
  4. Step 4: Simplify right side
    378,829.85x = 80,670,619,039.77
  5. Step 5: Solve for x
    x = 80,670,619,039.77/378,829.85
  6. Step 6: Final answer
    x = 212,946.84

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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.