Home / 289,309,739.46-399,247,137.05-157,150,840.92

Finding the Fourth Proportional to 289,309,739.46, 399,247,137.05 and 157,150,840.92

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Solution

The fourth proportional to 289,309,739.46, 399,247,137.05 and 157,150,840.92 is: 216,867,995.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,309,739.46 : 399,247,137.05 = 157,150,840.92 : x
  2. Step 2: Convert to fraction form
    289,309,739.46/399,247,137.05 = 157,150,840.92/x
  3. Step 3: Cross multiply
    289,309,739.46x = 399,247,137.05 × 157,150,840.92
  4. Step 4: Simplify right side
    289,309,739.46x = 62,742,023,321,524,232
  5. Step 5: Solve for x
    x = 62,742,023,321,524,232/289,309,739.46
  6. Step 6: Final answer
    x = 216,867,995.66

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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.