Home / 215,758,693.60-323,638,040.40-212,175,512.80

Finding the Fourth Proportional to 215,758,693.60, 323,638,040.40 and 212,175,512.80

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Solution

The fourth proportional to 215,758,693.60, 323,638,040.40 and 212,175,512.80 is: 318,263,269.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,758,693.60 : 323,638,040.40 = 212,175,512.80 : x
  2. Step 2: Convert to fraction form
    215,758,693.60/323,638,040.40 = 212,175,512.80/x
  3. Step 3: Cross multiply
    215,758,693.60x = 323,638,040.40 × 212,175,512.80
  4. Step 4: Simplify right side
    215,758,693.60x = 68,668,067,183,457,112
  5. Step 5: Solve for x
    x = 68,668,067,183,457,112/215,758,693.60
  6. Step 6: Final answer
    x = 318,263,269.20

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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.