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Finding the Fourth Proportional to 216,193,518.84, 324,299,978.82 and 70,635,948.60

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Solution

The fourth proportional to 216,193,518.84, 324,299,978.82 and 70,635,948.60 is: 105,957,092.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,193,518.84 : 324,299,978.82 = 70,635,948.60 : x
  2. Step 2: Convert to fraction form
    216,193,518.84/324,299,978.82 = 70,635,948.60/x
  3. Step 3: Cross multiply
    216,193,518.84x = 324,299,978.82 × 70,635,948.60
  4. Step 4: Simplify right side
    216,193,518.84x = 22,907,236,634,910,608
  5. Step 5: Solve for x
    x = 22,907,236,634,910,608/216,193,518.84
  6. Step 6: Final answer
    x = 105,957,092.32

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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.