Home / 278,854,853.69-385,371,830.09-228,539,712.42

Finding the Fourth Proportional to 278,854,853.69, 385,371,830.09 and 228,539,712.42

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Solution

The fourth proportional to 278,854,853.69, 385,371,830.09 and 228,539,712.42 is: 315,837,311.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,854,853.69 : 385,371,830.09 = 228,539,712.42 : x
  2. Step 2: Convert to fraction form
    278,854,853.69/385,371,830.09 = 228,539,712.42/x
  3. Step 3: Cross multiply
    278,854,853.69x = 385,371,830.09 × 228,539,712.42
  4. Step 4: Simplify right side
    278,854,853.69x = 88,072,767,222,394,992
  5. Step 5: Solve for x
    x = 88,072,767,222,394,992/278,854,853.69
  6. Step 6: Final answer
    x = 315,837,311.27

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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.