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Finding the Fourth Proportional to 207,629,797.80, 311,444,696.70 and 54,291,354.60

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Solution

The fourth proportional to 207,629,797.80, 311,444,696.70 and 54,291,354.60 is: 81,437,031.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,629,797.80 : 311,444,696.70 = 54,291,354.60 : x
  2. Step 2: Convert to fraction form
    207,629,797.80/311,444,696.70 = 54,291,354.60/x
  3. Step 3: Cross multiply
    207,629,797.80x = 311,444,696.70 × 54,291,354.60
  4. Step 4: Simplify right side
    207,629,797.80x = 16,908,754,466,829,150
  5. Step 5: Solve for x
    x = 16,908,754,466,829,150/207,629,797.80
  6. Step 6: Final answer
    x = 81,437,031.90

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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.