Home / 212,830.93-319,279.20-72,556.75

Finding the Fourth Proportional to 212,830.93, 319,279.20 and 72,556.75

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Solution

The fourth proportional to 212,830.93, 319,279.20 and 72,556.75 is: 108,846.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,830.93 : 319,279.20 = 72,556.75 : x
  2. Step 2: Convert to fraction form
    212,830.93/319,279.20 = 72,556.75/x
  3. Step 3: Cross multiply
    212,830.93x = 319,279.20 × 72,556.75
  4. Step 4: Simplify right side
    212,830.93x = 23,165,861,094.60
  5. Step 5: Solve for x
    x = 23,165,861,094.60/212,830.93
  6. Step 6: Final answer
    x = 108,846.31

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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.