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Finding the Fourth Proportional to 455,206.72, 628,035.44 and 294,156.64

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Solution

The fourth proportional to 455,206.72, 628,035.44 and 294,156.64 is: 405,839.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,206.72 : 628,035.44 = 294,156.64 : x
  2. Step 2: Convert to fraction form
    455,206.72/628,035.44 = 294,156.64/x
  3. Step 3: Cross multiply
    455,206.72x = 628,035.44 × 294,156.64
  4. Step 4: Simplify right side
    455,206.72x = 184,740,794,831.32
  5. Step 5: Solve for x
    x = 184,740,794,831.32/455,206.72
  6. Step 6: Final answer
    x = 405,839.34

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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.