Home / 280,923,521.75-387,671,604.63-155,475,961.64

Finding the Fourth Proportional to 280,923,521.75, 387,671,604.63 and 155,475,961.64

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Solution

The fourth proportional to 280,923,521.75, 387,671,604.63 and 155,475,961.64 is: 214,555,246.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,923,521.75 : 387,671,604.63 = 155,475,961.64 : x
  2. Step 2: Convert to fraction form
    280,923,521.75/387,671,604.63 = 155,475,961.64/x
  3. Step 3: Cross multiply
    280,923,521.75x = 387,671,604.63 × 155,475,961.64
  4. Step 4: Simplify right side
    280,923,521.75x = 60,273,615,530,371,120
  5. Step 5: Solve for x
    x = 60,273,615,530,371,120/280,923,521.75
  6. Step 6: Final answer
    x = 214,555,246.76

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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.