Home / 280,580,083.55-387,214,010.84-155,129,958.17

Finding the Fourth Proportional to 280,580,083.55, 387,214,010.84 and 155,129,958.17

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Solution

The fourth proportional to 280,580,083.55, 387,214,010.84 and 155,129,958.17 is: 214,086,803.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,580,083.55 : 387,214,010.84 = 155,129,958.17 : x
  2. Step 2: Convert to fraction form
    280,580,083.55/387,214,010.84 = 155,129,958.17/x
  3. Step 3: Cross multiply
    280,580,083.55x = 387,214,010.84 × 155,129,958.17
  4. Step 4: Simplify right side
    280,580,083.55x = 60,068,493,303,479,104
  5. Step 5: Solve for x
    x = 60,068,493,303,479,104/280,580,083.55
  6. Step 6: Final answer
    x = 214,086,803.82

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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.