Home / 280,629,780.96-387,271,603.61-155,190,464.83

Finding the Fourth Proportional to 280,629,780.96, 387,271,603.61 and 155,190,464.83

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Solution

The fourth proportional to 280,629,780.96, 387,271,603.61 and 155,190,464.83 is: 214,164,227.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,629,780.96 : 387,271,603.61 = 155,190,464.83 : x
  2. Step 2: Convert to fraction form
    280,629,780.96/387,271,603.61 = 155,190,464.83/x
  3. Step 3: Cross multiply
    280,629,780.96x = 387,271,603.61 × 155,190,464.83
  4. Step 4: Simplify right side
    280,629,780.96x = 60,100,860,179,695,416
  5. Step 5: Solve for x
    x = 60,100,860,179,695,416/280,629,780.96
  6. Step 6: Final answer
    x = 214,164,227.24

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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.