Home / 209,588,857.56-289,233,761.68-120,273,690.20

Finding the Fourth Proportional to 209,588,857.56, 289,233,761.68 and 120,273,690.20

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Solution

The fourth proportional to 209,588,857.56, 289,233,761.68 and 120,273,690.20 is: 165,978,345.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,588,857.56 : 289,233,761.68 = 120,273,690.20 : x
  2. Step 2: Convert to fraction form
    209,588,857.56/289,233,761.68 = 120,273,690.20/x
  3. Step 3: Cross multiply
    209,588,857.56x = 289,233,761.68 × 120,273,690.20
  4. Step 4: Simplify right side
    209,588,857.56x = 34,787,211,847,680,952
  5. Step 5: Solve for x
    x = 34,787,211,847,680,952/209,588,857.56
  6. Step 6: Final answer
    x = 165,978,345.67

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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.