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Finding the Fourth Proportional to 339,893,765.22, 507,905,728.17 and 255,211,093.74

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Solution

The fourth proportional to 339,893,765.22, 507,905,728.17 and 255,211,093.74 is: 381,363,795.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,893,765.22 : 507,905,728.17 = 255,211,093.74 : x
  2. Step 2: Convert to fraction form
    339,893,765.22/507,905,728.17 = 255,211,093.74/x
  3. Step 3: Cross multiply
    339,893,765.22x = 507,905,728.17 × 255,211,093.74
  4. Step 4: Simplify right side
    339,893,765.22x = 129,623,176,403,076,832
  5. Step 5: Solve for x
    x = 129,623,176,403,076,832/339,893,765.22
  6. Step 6: Final answer
    x = 381,363,795.59

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.