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Finding the Fourth Proportional to 368,976,538.52, 509,193,672.60 and 220,310,650.89

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Solution

The fourth proportional to 368,976,538.52, 509,193,672.60 and 220,310,650.89 is: 304,032,310.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,976,538.52 : 509,193,672.60 = 220,310,650.89 : x
  2. Step 2: Convert to fraction form
    368,976,538.52/509,193,672.60 = 220,310,650.89/x
  3. Step 3: Cross multiply
    368,976,538.52x = 509,193,672.60 × 220,310,650.89
  4. Step 4: Simplify right side
    368,976,538.52x = 112,180,789,437,118,752
  5. Step 5: Solve for x
    x = 112,180,789,437,118,752/368,976,538.52
  6. Step 6: Final answer
    x = 304,032,310.26

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.