Home / 215,077,900.20-322,616,850.30-78,816,427.80

Finding the Fourth Proportional to 215,077,900.20, 322,616,850.30 and 78,816,427.80

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Solution

The fourth proportional to 215,077,900.20, 322,616,850.30 and 78,816,427.80 is: 118,224,641.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,077,900.20 : 322,616,850.30 = 78,816,427.80 : x
  2. Step 2: Convert to fraction form
    215,077,900.20/322,616,850.30 = 78,816,427.80/x
  3. Step 3: Cross multiply
    215,077,900.20x = 322,616,850.30 × 78,816,427.80
  4. Step 4: Simplify right side
    215,077,900.20x = 25,427,507,688,733,360
  5. Step 5: Solve for x
    x = 25,427,507,688,733,360/215,077,900.20
  6. Step 6: Final answer
    x = 118,224,641.70

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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.