Home / 549,647.20-823,990.80-212,917.60

Finding the Fourth Proportional to 549,647.20, 823,990.80 and 212,917.60

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Solution

The fourth proportional to 549,647.20, 823,990.80 and 212,917.60 is: 319,190.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    549,647.20 : 823,990.80 = 212,917.60 : x
  2. Step 2: Convert to fraction form
    549,647.20/823,990.80 = 212,917.60/x
  3. Step 3: Cross multiply
    549,647.20x = 823,990.80 × 212,917.60
  4. Step 4: Simplify right side
    549,647.20x = 175,442,143,558.08
  5. Step 5: Solve for x
    x = 175,442,143,558.08/549,647.20
  6. Step 6: Final answer
    x = 319,190.46

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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.