Home / 389,614.55-583,933.97-209,256.76

Finding the Fourth Proportional to 389,614.55, 583,933.97 and 209,256.76

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Solution

The fourth proportional to 389,614.55, 583,933.97 and 209,256.76 is: 313,623.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,614.55 : 583,933.97 = 209,256.76 : x
  2. Step 2: Convert to fraction form
    389,614.55/583,933.97 = 209,256.76/x
  3. Step 3: Cross multiply
    389,614.55x = 583,933.97 × 209,256.76
  4. Step 4: Simplify right side
    389,614.55x = 122,192,129,569.85
  5. Step 5: Solve for x
    x = 122,192,129,569.85/389,614.55
  6. Step 6: Final answer
    x = 313,623.12

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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.