Home / 258,603,869.21-357,076,678.50-208,208,003.54

Finding the Fourth Proportional to 258,603,869.21, 357,076,678.50 and 208,208,003.54

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Solution

The fourth proportional to 258,603,869.21, 357,076,678.50 and 208,208,003.54 is: 287,490,757.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,603,869.21 : 357,076,678.50 = 208,208,003.54 : x
  2. Step 2: Convert to fraction form
    258,603,869.21/357,076,678.50 = 208,208,003.54/x
  3. Step 3: Cross multiply
    258,603,869.21x = 357,076,678.50 × 208,208,003.54
  4. Step 4: Simplify right side
    258,603,869.21x = 74,346,222,339,394,064
  5. Step 5: Solve for x
    x = 74,346,222,339,394,064/258,603,869.21
  6. Step 6: Final answer
    x = 287,490,757.84

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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.