Home / 312,889,712.20-469,334,568.30-140,372,153.80

Finding the Fourth Proportional to 312,889,712.20, 469,334,568.30 and 140,372,153.80

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Solution

The fourth proportional to 312,889,712.20, 469,334,568.30 and 140,372,153.80 is: 210,558,230.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,889,712.20 : 469,334,568.30 = 140,372,153.80 : x
  2. Step 2: Convert to fraction form
    312,889,712.20/469,334,568.30 = 140,372,153.80/x
  3. Step 3: Cross multiply
    312,889,712.20x = 469,334,568.30 × 140,372,153.80
  4. Step 4: Simplify right side
    312,889,712.20x = 65,881,504,205,064,208
  5. Step 5: Solve for x
    x = 65,881,504,205,064,208/312,889,712.20
  6. Step 6: Final answer
    x = 210,558,230.70

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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.