Home / 305,480,858.27-421,608,006.25-171,533,811.42

Finding the Fourth Proportional to 305,480,858.27, 421,608,006.25 and 171,533,811.42

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Solution

The fourth proportional to 305,480,858.27, 421,608,006.25 and 171,533,811.42 is: 236,741,603.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,480,858.27 : 421,608,006.25 = 171,533,811.42 : x
  2. Step 2: Convert to fraction form
    305,480,858.27/421,608,006.25 = 171,533,811.42/x
  3. Step 3: Cross multiply
    305,480,858.27x = 421,608,006.25 × 171,533,811.42
  4. Step 4: Simplify right side
    305,480,858.27x = 72,320,028,236,820,848
  5. Step 5: Solve for x
    x = 72,320,028,236,820,848/305,480,858.27
  6. Step 6: Final answer
    x = 236,741,603.54

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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.