Home / 278,468,900.22-384,290,141.11-153,021,128.60

Finding the Fourth Proportional to 278,468,900.22, 384,290,141.11 and 153,021,128.60

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Solution

The fourth proportional to 278,468,900.22, 384,290,141.11 and 153,021,128.60 is: 211,170,838.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,468,900.22 : 384,290,141.11 = 153,021,128.60 : x
  2. Step 2: Convert to fraction form
    278,468,900.22/384,290,141.11 = 153,021,128.60/x
  3. Step 3: Cross multiply
    278,468,900.22x = 384,290,141.11 × 153,021,128.60
  4. Step 4: Simplify right side
    278,468,900.22x = 58,804,511,100,584,008
  5. Step 5: Solve for x
    x = 58,804,511,100,584,008/278,468,900.22
  6. Step 6: Final answer
    x = 211,170,838.30

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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.