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Finding the Fourth Proportional to 206,883.60, 310,325.40 and 122,902.80

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Solution

The fourth proportional to 206,883.60, 310,325.40 and 122,902.80 is: 184,354.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,883.60 : 310,325.40 = 122,902.80 : x
  2. Step 2: Convert to fraction form
    206,883.60/310,325.40 = 122,902.80/x
  3. Step 3: Cross multiply
    206,883.60x = 310,325.40 × 122,902.80
  4. Step 4: Simplify right side
    206,883.60x = 38,139,860,571.12
  5. Step 5: Solve for x
    x = 38,139,860,571.12/206,883.60
  6. Step 6: Final answer
    x = 184,354.20

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1.5x scale

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.