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Finding the Fourth Proportional to 455,015.23, 681,991.48 and 342,333.48

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Solution

The fourth proportional to 455,015.23, 681,991.48 and 342,333.48 is: 513,100.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,015.23 : 681,991.48 = 342,333.48 : x
  2. Step 2: Convert to fraction form
    455,015.23/681,991.48 = 342,333.48/x
  3. Step 3: Cross multiply
    455,015.23x = 681,991.48 × 342,333.48
  4. Step 4: Simplify right side
    455,015.23x = 233,468,516,678.75
  5. Step 5: Solve for x
    x = 233,468,516,678.75/455,015.23
  6. Step 6: Final answer
    x = 513,100.44

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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.