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Finding the Fourth Proportional to 366,965.55, 550,448.34 and 310,978.35

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Solution

The fourth proportional to 366,965.55, 550,448.34 and 310,978.35 is: 466,467.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    366,965.55 : 550,448.34 = 310,978.35 : x
  2. Step 2: Convert to fraction form
    366,965.55/550,448.34 = 310,978.35/x
  3. Step 3: Cross multiply
    366,965.55x = 550,448.34 × 310,978.35
  4. Step 4: Simplify right side
    366,965.55x = 171,177,516,533.44
  5. Step 5: Solve for x
    x = 171,177,516,533.44/366,965.55
  6. Step 6: Final answer
    x = 466,467.54

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.