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Finding the Fourth Proportional to 618,302,216.40, 927,453,324.60 and 209,358,366.90

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Solution

The fourth proportional to 618,302,216.40, 927,453,324.60 and 209,358,366.90 is: 314,037,550.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,302,216.40 : 927,453,324.60 = 209,358,366.90 : x
  2. Step 2: Convert to fraction form
    618,302,216.40/927,453,324.60 = 209,358,366.90/x
  3. Step 3: Cross multiply
    618,302,216.40x = 927,453,324.60 × 209,358,366.90
  4. Step 4: Simplify right side
    618,302,216.40x = 194,170,113,414,231,616
  5. Step 5: Solve for x
    x = 194,170,113,414,231,616/618,302,216.40
  6. Step 6: Final answer
    x = 314,037,550.35

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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.