Home / 291,187,270.78-401,848,349.86-172,211,851.08

Finding the Fourth Proportional to 291,187,270.78, 401,848,349.86 and 172,211,851.08

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Solution

The fourth proportional to 291,187,270.78, 401,848,349.86 and 172,211,851.08 is: 237,658,219.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,187,270.78 : 401,848,349.86 = 172,211,851.08 : x
  2. Step 2: Convert to fraction form
    291,187,270.78/401,848,349.86 = 172,211,851.08/x
  3. Step 3: Cross multiply
    291,187,270.78x = 401,848,349.86 × 172,211,851.08
  4. Step 4: Simplify right side
    291,187,270.78x = 69,203,048,182,834,064
  5. Step 5: Solve for x
    x = 69,203,048,182,834,064/291,187,270.78
  6. Step 6: Final answer
    x = 237,658,219.05

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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.