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Finding the Fourth Proportional to 213,482.88, 320,115.60 and 71,277.12

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Solution

The fourth proportional to 213,482.88, 320,115.60 and 71,277.12 is: 106,879.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,482.88 : 320,115.60 = 71,277.12 : x
  2. Step 2: Convert to fraction form
    213,482.88/320,115.60 = 71,277.12/x
  3. Step 3: Cross multiply
    213,482.88x = 320,115.60 × 71,277.12
  4. Step 4: Simplify right side
    213,482.88x = 22,816,918,035.07
  5. Step 5: Solve for x
    x = 22,816,918,035.07/213,482.88
  6. Step 6: Final answer
    x = 106,879.38

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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.