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Finding the Fourth Proportional to 218,353.60, 325,276.90 and 211,745.60

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Solution

The fourth proportional to 218,353.60, 325,276.90 and 211,745.60 is: 315,433.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,353.60 : 325,276.90 = 211,745.60 : x
  2. Step 2: Convert to fraction form
    218,353.60/325,276.90 = 211,745.60/x
  3. Step 3: Cross multiply
    218,353.60x = 325,276.90 × 211,745.60
  4. Step 4: Simplify right side
    218,353.60x = 68,875,952,356.64
  5. Step 5: Solve for x
    x = 68,875,952,356.64/218,353.60
  6. Step 6: Final answer
    x = 315,433.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.