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Finding the Fourth Proportional to 455,708.67, 628,875.94 and 251,759.62

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Solution

The fourth proportional to 455,708.67, 628,875.94 and 251,759.62 is: 347,427.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,708.67 : 628,875.94 = 251,759.62 : x
  2. Step 2: Convert to fraction form
    455,708.67/628,875.94 = 251,759.62/x
  3. Step 3: Cross multiply
    455,708.67x = 628,875.94 × 251,759.62
  4. Step 4: Simplify right side
    455,708.67x = 158,325,567,681.54
  5. Step 5: Solve for x
    x = 158,325,567,681.54/455,708.67
  6. Step 6: Final answer
    x = 347,427.16

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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.