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Finding the Fourth Proportional to 455,636.55, 628,774.48 and 251,701.70

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Solution

The fourth proportional to 455,636.55, 628,774.48 and 251,701.70 is: 347,346.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,636.55 : 628,774.48 = 251,701.70 : x
  2. Step 2: Convert to fraction form
    455,636.55/628,774.48 = 251,701.70/x
  3. Step 3: Cross multiply
    455,636.55x = 628,774.48 × 251,701.70
  4. Step 4: Simplify right side
    455,636.55x = 158,263,605,532.62
  5. Step 5: Solve for x
    x = 158,263,605,532.62/455,636.55
  6. Step 6: Final answer
    x = 347,346.16

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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.