Home / 231,619,358.70-347,429,038.05-78,263,200.80

Finding the Fourth Proportional to 231,619,358.70, 347,429,038.05 and 78,263,200.80

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Solution

The fourth proportional to 231,619,358.70, 347,429,038.05 and 78,263,200.80 is: 117,394,801.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,619,358.70 : 347,429,038.05 = 78,263,200.80 : x
  2. Step 2: Convert to fraction form
    231,619,358.70/347,429,038.05 = 78,263,200.80/x
  3. Step 3: Cross multiply
    231,619,358.70x = 347,429,038.05 × 78,263,200.80
  4. Step 4: Simplify right side
    231,619,358.70x = 27,190,908,568,657,992
  5. Step 5: Solve for x
    x = 27,190,908,568,657,992/231,619,358.70
  6. Step 6: Final answer
    x = 117,394,801.20

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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.