Home / 209,622.63-289,254.20-123,516.39

Finding the Fourth Proportional to 209,622.63, 289,254.20 and 123,516.39

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Solution

The fourth proportional to 209,622.63, 289,254.20 and 123,516.39 is: 170,437.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,622.63 : 289,254.20 = 123,516.39 : x
  2. Step 2: Convert to fraction form
    209,622.63/289,254.20 = 123,516.39/x
  3. Step 3: Cross multiply
    209,622.63x = 289,254.20 × 123,516.39
  4. Step 4: Simplify right side
    209,622.63x = 35,727,633,958.76
  5. Step 5: Solve for x
    x = 35,727,633,958.76/209,622.63
  6. Step 6: Final answer
    x = 170,437.87

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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.