Home / 215,863,489.09-323,817,915.56-70,308,384.80

Finding the Fourth Proportional to 215,863,489.09, 323,817,915.56 and 70,308,384.80

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Solution

The fourth proportional to 215,863,489.09, 323,817,915.56 and 70,308,384.80 is: 105,469,964.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,863,489.09 : 323,817,915.56 = 70,308,384.80 : x
  2. Step 2: Convert to fraction form
    215,863,489.09/323,817,915.56 = 70,308,384.80/x
  3. Step 3: Cross multiply
    215,863,489.09x = 323,817,915.56 × 70,308,384.80
  4. Step 4: Simplify right side
    215,863,489.09x = 22,767,114,610,355,756
  5. Step 5: Solve for x
    x = 22,767,114,610,355,756/215,863,489.09
  6. Step 6: Final answer
    x = 105,469,964.87

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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.