Home / 389,156.28-583,763.22-139,840.44

Finding the Fourth Proportional to 389,156.28, 583,763.22 and 139,840.44

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Solution

The fourth proportional to 389,156.28, 583,763.22 and 139,840.44 is: 209,771.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,156.28 : 583,763.22 = 139,840.44 : x
  2. Step 2: Convert to fraction form
    389,156.28/583,763.22 = 139,840.44/x
  3. Step 3: Cross multiply
    389,156.28x = 583,763.22 × 139,840.44
  4. Step 4: Simplify right side
    389,156.28x = 81,633,705,540.62
  5. Step 5: Solve for x
    x = 81,633,705,540.62/389,156.28
  6. Step 6: Final answer
    x = 209,771.01

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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.