Home / 209,588,855.56-289,233,758.92-120,273,688.20

Finding the Fourth Proportional to 209,588,855.56, 289,233,758.92 and 120,273,688.20

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Solution

The fourth proportional to 209,588,855.56, 289,233,758.92 and 120,273,688.20 is: 165,978,342.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,588,855.56 : 289,233,758.92 = 120,273,688.20 : x
  2. Step 2: Convert to fraction form
    209,588,855.56/289,233,758.92 = 120,273,688.20/x
  3. Step 3: Cross multiply
    209,588,855.56x = 289,233,758.92 × 120,273,688.20
  4. Step 4: Simplify right side
    209,588,855.56x = 34,787,210,937,258,052
  5. Step 5: Solve for x
    x = 34,787,210,937,258,052/209,588,855.56
  6. Step 6: Final answer
    x = 165,978,342.91

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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.