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Finding the Fourth Proportional to 493,181.80, 740,118.30 and 212,900.20

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Solution

The fourth proportional to 493,181.80, 740,118.30 and 212,900.20 is: 319,499.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,181.80 : 740,118.30 = 212,900.20 : x
  2. Step 2: Convert to fraction form
    493,181.80/740,118.30 = 212,900.20/x
  3. Step 3: Cross multiply
    493,181.80x = 740,118.30 × 212,900.20
  4. Step 4: Simplify right side
    493,181.80x = 157,571,334,093.66
  5. Step 5: Solve for x
    x = 157,571,334,093.66/493,181.80
  6. Step 6: Final answer
    x = 319,499.49

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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.