Home / 291,188,776.72-401,850,427.44-172,213,357.20

Finding the Fourth Proportional to 291,188,776.72, 401,850,427.44 and 172,213,357.20

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Solution

The fourth proportional to 291,188,776.72, 401,850,427.44 and 172,213,357.20 is: 237,660,297.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,188,776.72 : 401,850,427.44 = 172,213,357.20 : x
  2. Step 2: Convert to fraction form
    291,188,776.72/401,850,427.44 = 172,213,357.20/x
  3. Step 3: Cross multiply
    291,188,776.72x = 401,850,427.44 × 172,213,357.20
  4. Step 4: Simplify right side
    291,188,776.72x = 69,204,011,201,697,400
  5. Step 5: Solve for x
    x = 69,204,011,201,697,400/291,188,776.72
  6. Step 6: Final answer
    x = 237,660,297.15

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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.