Home / 209,650.34-289,279.03-123,636.30

Finding the Fourth Proportional to 209,650.34, 289,279.03 and 123,636.30

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Solution

The fourth proportional to 209,650.34, 289,279.03 and 123,636.30 is: 170,595.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,650.34 : 289,279.03 = 123,636.30 : x
  2. Step 2: Convert to fraction form
    209,650.34/289,279.03 = 123,636.30/x
  3. Step 3: Cross multiply
    209,650.34x = 289,279.03 × 123,636.30
  4. Step 4: Simplify right side
    209,650.34x = 35,765,388,318.61
  5. Step 5: Solve for x
    x = 35,765,388,318.61/209,650.34
  6. Step 6: Final answer
    x = 170,595.43

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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.