Home / 315,022,911.20-472,392,649.20-120,869,799.20

Finding the Fourth Proportional to 315,022,911.20, 472,392,649.20 and 120,869,799.20

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Solution

The fourth proportional to 315,022,911.20, 472,392,649.20 and 120,869,799.20 is: 181,250,323.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,022,911.20 : 472,392,649.20 = 120,869,799.20 : x
  2. Step 2: Convert to fraction form
    315,022,911.20/472,392,649.20 = 120,869,799.20/x
  3. Step 3: Cross multiply
    315,022,911.20x = 472,392,649.20 × 120,869,799.20
  4. Step 4: Simplify right side
    315,022,911.20x = 57,098,004,652,360,040
  5. Step 5: Solve for x
    x = 57,098,004,652,360,040/315,022,911.20
  6. Step 6: Final answer
    x = 181,250,323.78

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.