Home / 278,728,820.57-384,536,907.56-159,587,739.02

Finding the Fourth Proportional to 278,728,820.57, 384,536,907.56 and 159,587,739.02

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Solution

The fourth proportional to 278,728,820.57, 384,536,907.56 and 159,587,739.02 is: 220,168,748.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,728,820.57 : 384,536,907.56 = 159,587,739.02 : x
  2. Step 2: Convert to fraction form
    278,728,820.57/384,536,907.56 = 159,587,739.02/x
  3. Step 3: Cross multiply
    278,728,820.57x = 384,536,907.56 × 159,587,739.02
  4. Step 4: Simplify right side
    278,728,820.57x = 61,367,375,645,719,424
  5. Step 5: Solve for x
    x = 61,367,375,645,719,424/278,728,820.57
  6. Step 6: Final answer
    x = 220,168,748.68

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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.