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Finding the Fourth Proportional to 291,069.78, 401,675.70 and 163,745.47

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Solution

The fourth proportional to 291,069.78, 401,675.70 and 163,745.47 is: 225,968.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,069.78 : 401,675.70 = 163,745.47 : x
  2. Step 2: Convert to fraction form
    291,069.78/401,675.70 = 163,745.47/x
  3. Step 3: Cross multiply
    291,069.78x = 401,675.70 × 163,745.47
  4. Step 4: Simplify right side
    291,069.78x = 65,772,576,284.08
  5. Step 5: Solve for x
    x = 65,772,576,284.08/291,069.78
  6. Step 6: Final answer
    x = 225,968.41

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1.5x scale

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.