Home / 278,841,764.40-418,262,646.60-214,470,481.20

Finding the Fourth Proportional to 278,841,764.40, 418,262,646.60 and 214,470,481.20

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Solution

The fourth proportional to 278,841,764.40, 418,262,646.60 and 214,470,481.20 is: 321,705,721.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,841,764.40 : 418,262,646.60 = 214,470,481.20 : x
  2. Step 2: Convert to fraction form
    278,841,764.40/418,262,646.60 = 214,470,481.20/x
  3. Step 3: Cross multiply
    278,841,764.40x = 418,262,646.60 × 214,470,481.20
  4. Step 4: Simplify right side
    278,841,764.40x = 89,704,991,084,287,552
  5. Step 5: Solve for x
    x = 89,704,991,084,287,552/278,841,764.40
  6. Step 6: Final answer
    x = 321,705,721.80

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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.