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Finding the Fourth Proportional to 245,855,217.70, 368,782,826.55 and 191,435,659.30

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Solution

The fourth proportional to 245,855,217.70, 368,782,826.55 and 191,435,659.30 is: 287,153,488.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,855,217.70 : 368,782,826.55 = 191,435,659.30 : x
  2. Step 2: Convert to fraction form
    245,855,217.70/368,782,826.55 = 191,435,659.30/x
  3. Step 3: Cross multiply
    245,855,217.70x = 368,782,826.55 × 191,435,659.30
  4. Step 4: Simplify right side
    245,855,217.70x = 70,598,183,539,116,800
  5. Step 5: Solve for x
    x = 70,598,183,539,116,800/245,855,217.70
  6. Step 6: Final answer
    x = 287,153,488.95

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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.