Home / 280,546,984.36-387,166,795-156,787,657.84

Finding the Fourth Proportional to 280,546,984.36, 387,166,795 and 156,787,657.84

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Solution

The fourth proportional to 280,546,984.36, 387,166,795 and 156,787,657.84 is: 216,373,649.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,546,984.36 : 387,166,795 = 156,787,657.84 : x
  2. Step 2: Convert to fraction form
    280,546,984.36/387,166,795 = 156,787,657.84/x
  3. Step 3: Cross multiply
    280,546,984.36x = 387,166,795 × 156,787,657.84
  4. Step 4: Simplify right side
    280,546,984.36x = 60,702,974,981,469,424
  5. Step 5: Solve for x
    x = 60,702,974,981,469,424/280,546,984.36
  6. Step 6: Final answer
    x = 216,373,649.93

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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.