Home / 345,822.92-477,163.46-209,928.41

Finding the Fourth Proportional to 345,822.92, 477,163.46 and 209,928.41

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Solution

The fourth proportional to 345,822.92, 477,163.46 and 209,928.41 is: 289,657.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,822.92 : 477,163.46 = 209,928.41 : x
  2. Step 2: Convert to fraction form
    345,822.92/477,163.46 = 209,928.41/x
  3. Step 3: Cross multiply
    345,822.92x = 477,163.46 × 209,928.41
  4. Step 4: Simplify right side
    345,822.92x = 100,170,165,215.42
  5. Step 5: Solve for x
    x = 100,170,165,215.42/345,822.92
  6. Step 6: Final answer
    x = 289,657.39

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1.5x scale

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.