Home / 509,906.08-764,749.77-210,308.95

Finding the Fourth Proportional to 509,906.08, 764,749.77 and 210,308.95

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Solution

The fourth proportional to 509,906.08, 764,749.77 and 210,308.95 is: 315,418.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,906.08 : 764,749.77 = 210,308.95 : x
  2. Step 2: Convert to fraction form
    509,906.08/764,749.77 = 210,308.95/x
  3. Step 3: Cross multiply
    509,906.08x = 764,749.77 × 210,308.95
  4. Step 4: Simplify right side
    509,906.08x = 160,833,721,141.44
  5. Step 5: Solve for x
    x = 160,833,721,141.44/509,906.08
  6. Step 6: Final answer
    x = 315,418.32

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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.