Home / 307,126,181.80-421,578,079.85-271,539,317.80

Finding the Fourth Proportional to 307,126,181.80, 421,578,079.85 and 271,539,317.80

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Solution

The fourth proportional to 307,126,181.80, 421,578,079.85 and 271,539,317.80 is: 372,729,617.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,126,181.80 : 421,578,079.85 = 271,539,317.80 : x
  2. Step 2: Convert to fraction form
    307,126,181.80/421,578,079.85 = 271,539,317.80/x
  3. Step 3: Cross multiply
    307,126,181.80x = 421,578,079.85 × 271,539,317.80
  4. Step 4: Simplify right side
    307,126,181.80x = 114,475,024,201,902,944
  5. Step 5: Solve for x
    x = 114,475,024,201,902,944/307,126,181.80
  6. Step 6: Final answer
    x = 372,729,617.29

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.