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Finding the Fourth Proportional to 320,997.89, 480,756.67 and 230,478.67

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Solution

The fourth proportional to 320,997.89, 480,756.67 and 230,478.67 is: 345,186.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,997.89 : 480,756.67 = 230,478.67 : x
  2. Step 2: Convert to fraction form
    320,997.89/480,756.67 = 230,478.67/x
  3. Step 3: Cross multiply
    320,997.89x = 480,756.67 × 230,478.67
  4. Step 4: Simplify right side
    320,997.89x = 110,804,155,215.72
  5. Step 5: Solve for x
    x = 110,804,155,215.72/320,997.89
  6. Step 6: Final answer
    x = 345,186.56

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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.