Home / 280,629,780.86-387,271,603.44-155,190,464.72

Finding the Fourth Proportional to 280,629,780.86, 387,271,603.44 and 155,190,464.72

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Solution

The fourth proportional to 280,629,780.86, 387,271,603.44 and 155,190,464.72 is: 214,164,227.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,629,780.86 : 387,271,603.44 = 155,190,464.72 : x
  2. Step 2: Convert to fraction form
    280,629,780.86/387,271,603.44 = 155,190,464.72/x
  3. Step 3: Cross multiply
    280,629,780.86x = 387,271,603.44 × 155,190,464.72
  4. Step 4: Simplify right side
    280,629,780.86x = 60,100,860,110,713,152
  5. Step 5: Solve for x
    x = 60,100,860,110,713,152/280,629,780.86
  6. Step 6: Final answer
    x = 214,164,227.07

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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.