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Finding the Fourth Proportional to 455,078.03, 628,020.98 and 251,142.14

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Solution

The fourth proportional to 455,078.03, 628,020.98 and 251,142.14 is: 346,583.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,078.03 : 628,020.98 = 251,142.14 : x
  2. Step 2: Convert to fraction form
    455,078.03/628,020.98 = 251,142.14/x
  3. Step 3: Cross multiply
    455,078.03x = 628,020.98 × 251,142.14
  4. Step 4: Simplify right side
    455,078.03x = 157,722,528,486.28
  5. Step 5: Solve for x
    x = 157,722,528,486.28/455,078.03
  6. Step 6: Final answer
    x = 346,583.49

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1.5x scale

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.