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Finding the Fourth Proportional to 213,763.60, 320,645.40 and 114,230.80

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Solution

The fourth proportional to 213,763.60, 320,645.40 and 114,230.80 is: 171,346.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,763.60 : 320,645.40 = 114,230.80 : x
  2. Step 2: Convert to fraction form
    213,763.60/320,645.40 = 114,230.80/x
  3. Step 3: Cross multiply
    213,763.60x = 320,645.40 × 114,230.80
  4. Step 4: Simplify right side
    213,763.60x = 36,627,580,558.32
  5. Step 5: Solve for x
    x = 36,627,580,558.32/213,763.60
  6. Step 6: Final answer
    x = 171,346.20

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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.