Home / 289,109.22-433,414.36-139,143.20

Finding the Fourth Proportional to 289,109.22, 433,414.36 and 139,143.20

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Solution

The fourth proportional to 289,109.22, 433,414.36 and 139,143.20 is: 208,594.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,109.22 : 433,414.36 = 139,143.20 : x
  2. Step 2: Convert to fraction form
    289,109.22/433,414.36 = 139,143.20/x
  3. Step 3: Cross multiply
    289,109.22x = 433,414.36 × 139,143.20
  4. Step 4: Simplify right side
    289,109.22x = 60,306,660,976.35
  5. Step 5: Solve for x
    x = 60,306,660,976.35/289,109.22
  6. Step 6: Final answer
    x = 208,594.73

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1.5x scale

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.