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Finding the Fourth Proportional to 212,689,622.60, 319,034,433.90 and 212,689,622.60

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Solution

The fourth proportional to 212,689,622.60, 319,034,433.90 and 212,689,622.60 is: 319,034,433.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,689,622.60 : 319,034,433.90 = 212,689,622.60 : x
  2. Step 2: Convert to fraction form
    212,689,622.60/319,034,433.90 = 212,689,622.60/x
  3. Step 3: Cross multiply
    212,689,622.60x = 319,034,433.90 × 212,689,622.60
  4. Step 4: Simplify right side
    212,689,622.60x = 67,855,313,342,595,640
  5. Step 5: Solve for x
    x = 67,855,313,342,595,640/212,689,622.60
  6. Step 6: Final answer
    x = 319,034,433.90

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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.