Home / 309,915,759.89-427,675,013.24-168,783,794.75

Finding the Fourth Proportional to 309,915,759.89, 427,675,013.24 and 168,783,794.75

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Solution

The fourth proportional to 309,915,759.89, 427,675,013.24 and 168,783,794.75 is: 232,916,879.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,915,759.89 : 427,675,013.24 = 168,783,794.75 : x
  2. Step 2: Convert to fraction form
    309,915,759.89/427,675,013.24 = 168,783,794.75/x
  3. Step 3: Cross multiply
    309,915,759.89x = 427,675,013.24 × 168,783,794.75
  4. Step 4: Simplify right side
    309,915,759.89x = 72,184,611,654,628,960
  5. Step 5: Solve for x
    x = 72,184,611,654,628,960/309,915,759.89
  6. Step 6: Final answer
    x = 232,916,879.35

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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.