Home / 389,150.10-536,965.38-219,351.42

Finding the Fourth Proportional to 389,150.10, 536,965.38 and 219,351.42

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Solution

The fourth proportional to 389,150.10, 536,965.38 and 219,351.42 is: 302,670.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,150.10 : 536,965.38 = 219,351.42 : x
  2. Step 2: Convert to fraction form
    389,150.10/536,965.38 = 219,351.42/x
  3. Step 3: Cross multiply
    389,150.10x = 536,965.38 × 219,351.42
  4. Step 4: Simplify right side
    389,150.10x = 117,784,118,593.84
  5. Step 5: Solve for x
    x = 117,784,118,593.84/389,150.10
  6. Step 6: Final answer
    x = 302,670.15

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.