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Finding the Fourth Proportional to 455,282.27, 628,285.68 and 251,328.81

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Solution

The fourth proportional to 455,282.27, 628,285.68 and 251,328.81 is: 346,831.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,282.27 : 628,285.68 = 251,328.81 : x
  2. Step 2: Convert to fraction form
    455,282.27/628,285.68 = 251,328.81/x
  3. Step 3: Cross multiply
    455,282.27x = 628,285.68 × 251,328.81
  4. Step 4: Simplify right side
    455,282.27x = 157,906,294,650.51
  5. Step 5: Solve for x
    x = 157,906,294,650.51/455,282.27
  6. Step 6: Final answer
    x = 346,831.64

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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.