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Finding the Fourth Proportional to 454,556.16, 681,861.12 and 139,034.88

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Solution

The fourth proportional to 454,556.16, 681,861.12 and 139,034.88 is: 208,560.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    454,556.16 : 681,861.12 = 139,034.88 : x
  2. Step 2: Convert to fraction form
    454,556.16/681,861.12 = 139,034.88/x
  3. Step 3: Cross multiply
    454,556.16x = 681,861.12 × 139,034.88
  4. Step 4: Simplify right side
    454,556.16x = 94,802,478,995.87
  5. Step 5: Solve for x
    x = 94,802,478,995.87/454,556.16
  6. Step 6: Final answer
    x = 208,560.54

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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.