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Finding the Fourth Proportional to 212,617,603.20, 297,866,198.40 and 212,617,603.20

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Solution

The fourth proportional to 212,617,603.20, 297,866,198.40 and 212,617,603.20 is: 297,866,198.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,617,603.20 : 297,866,198.40 = 212,617,603.20 : x
  2. Step 2: Convert to fraction form
    212,617,603.20/297,866,198.40 = 212,617,603.20/x
  3. Step 3: Cross multiply
    212,617,603.20x = 297,866,198.40 × 212,617,603.20
  4. Step 4: Simplify right side
    212,617,603.20x = 63,331,597,178,103,664
  5. Step 5: Solve for x
    x = 63,331,597,178,103,664/212,617,603.20
  6. Step 6: Final answer
    x = 297,866,198.40

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.