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Finding the Fourth Proportional to 273,139,937.20, 409,709,905.80 and 273,139,937.20

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Solution

The fourth proportional to 273,139,937.20, 409,709,905.80 and 273,139,937.20 is: 409,709,905.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    273,139,937.20 : 409,709,905.80 = 273,139,937.20 : x
  2. Step 2: Convert to fraction form
    273,139,937.20/409,709,905.80 = 273,139,937.20/x
  3. Step 3: Cross multiply
    273,139,937.20x = 409,709,905.80 × 273,139,937.20
  4. Step 4: Simplify right side
    273,139,937.20x = 111,908,137,940,429,920
  5. Step 5: Solve for x
    x = 111,908,137,940,429,920/273,139,937.20
  6. Step 6: Final answer
    x = 409,709,905.80

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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.