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Finding the Fourth Proportional to 400,352,616.72, 600,619,477.67 and 216,116,138.39

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Solution

The fourth proportional to 400,352,616.72, 600,619,477.67 and 216,116,138.39 is: 324,223,089.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,352,616.72 : 600,619,477.67 = 216,116,138.39 : x
  2. Step 2: Convert to fraction form
    400,352,616.72/600,619,477.67 = 216,116,138.39/x
  3. Step 3: Cross multiply
    400,352,616.72x = 600,619,477.67 × 216,116,138.39
  4. Step 4: Simplify right side
    400,352,616.72x = 129,803,562,151,775,536
  5. Step 5: Solve for x
    x = 129,803,562,151,775,536/400,352,616.72
  6. Step 6: Final answer
    x = 324,223,089.17

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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.