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Finding the Fourth Proportional to 213,205.37, 319,808.01 and 63,447.80

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Solution

The fourth proportional to 213,205.37, 319,808.01 and 63,447.80 is: 95,171.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,205.37 : 319,808.01 = 63,447.80 : x
  2. Step 2: Convert to fraction form
    213,205.37/319,808.01 = 63,447.80/x
  3. Step 3: Cross multiply
    213,205.37x = 319,808.01 × 63,447.80
  4. Step 4: Simplify right side
    213,205.37x = 20,291,114,656.88
  5. Step 5: Solve for x
    x = 20,291,114,656.88/213,205.37
  6. Step 6: Final answer
    x = 95,171.69

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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.