Home / 389,117.13-536,989.85-219,351.25

Finding the Fourth Proportional to 389,117.13, 536,989.85 and 219,351.25

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Solution

The fourth proportional to 389,117.13, 536,989.85 and 219,351.25 is: 302,709.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,117.13 : 536,989.85 = 219,351.25 : x
  2. Step 2: Convert to fraction form
    389,117.13/536,989.85 = 219,351.25/x
  3. Step 3: Cross multiply
    389,117.13x = 536,989.85 × 219,351.25
  4. Step 4: Simplify right side
    389,117.13x = 117,789,394,834.81
  5. Step 5: Solve for x
    x = 117,789,394,834.81/389,117.13
  6. Step 6: Final answer
    x = 302,709.35

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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.