Home / 278,328,919.40-417,493,379.10-169,489,802.60

Finding the Fourth Proportional to 278,328,919.40, 417,493,379.10 and 169,489,802.60

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Solution

The fourth proportional to 278,328,919.40, 417,493,379.10 and 169,489,802.60 is: 254,234,703.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,328,919.40 : 417,493,379.10 = 169,489,802.60 : x
  2. Step 2: Convert to fraction form
    278,328,919.40/417,493,379.10 = 169,489,802.60/x
  3. Step 3: Cross multiply
    278,328,919.40x = 417,493,379.10 × 169,489,802.60
  4. Step 4: Simplify right side
    278,328,919.40x = 70,760,870,410,465,968
  5. Step 5: Solve for x
    x = 70,760,870,410,465,968/278,328,919.40
  6. Step 6: Final answer
    x = 254,234,703.90

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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.