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Finding the Fourth Proportional to 455,271.36, 628,333.92 and 254,109.12

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Solution

The fourth proportional to 455,271.36, 628,333.92 and 254,109.12 is: 350,703.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,271.36 : 628,333.92 = 254,109.12 : x
  2. Step 2: Convert to fraction form
    455,271.36/628,333.92 = 254,109.12/x
  3. Step 3: Cross multiply
    455,271.36x = 628,333.92 × 254,109.12
  4. Step 4: Simplify right side
    455,271.36x = 159,665,379,477.35
  5. Step 5: Solve for x
    x = 159,665,379,477.35/455,271.36
  6. Step 6: Final answer
    x = 350,703.76

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.