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Finding the Fourth Proportional to 664,960.80, 997,570.80 and 265,533.60

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Solution

The fourth proportional to 664,960.80, 997,570.80 and 265,533.60 is: 398,352.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,960.80 : 997,570.80 = 265,533.60 : x
  2. Step 2: Convert to fraction form
    664,960.80/997,570.80 = 265,533.60/x
  3. Step 3: Cross multiply
    664,960.80x = 997,570.80 × 265,533.60
  4. Step 4: Simplify right side
    664,960.80x = 264,888,565,778.88
  5. Step 5: Solve for x
    x = 264,888,565,778.88/664,960.80
  6. Step 6: Final answer
    x = 398,352.15

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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.