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Finding the Fourth Proportional to 454,563.60, 681,736.05 and 139,023.24

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Solution

The fourth proportional to 454,563.60, 681,736.05 and 139,023.24 is: 208,501.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    454,563.60 : 681,736.05 = 139,023.24 : x
  2. Step 2: Convert to fraction form
    454,563.60/681,736.05 = 139,023.24/x
  3. Step 3: Cross multiply
    454,563.60x = 681,736.05 × 139,023.24
  4. Step 4: Simplify right side
    454,563.60x = 94,777,154,495.80
  5. Step 5: Solve for x
    x = 94,777,154,495.80/454,563.60
  6. Step 6: Final answer
    x = 208,501.42

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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.