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Finding the Fourth Proportional to 290,649.95, 401,134.50 and 163,325.55

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Solution

The fourth proportional to 290,649.95, 401,134.50 and 163,325.55 is: 225,410.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,649.95 : 401,134.50 = 163,325.55 : x
  2. Step 2: Convert to fraction form
    290,649.95/401,134.50 = 163,325.55/x
  3. Step 3: Cross multiply
    290,649.95x = 401,134.50 × 163,325.55
  4. Step 4: Simplify right side
    290,649.95x = 65,515,512,836.48
  5. Step 5: Solve for x
    x = 65,515,512,836.48/290,649.95
  6. Step 6: Final answer
    x = 225,410.37

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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.