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Finding the Fourth Proportional to 470,486.88, 649,272.60 and 255,626.87

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Solution

The fourth proportional to 470,486.88, 649,272.60 and 255,626.87 is: 352,765.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    470,486.88 : 649,272.60 = 255,626.87 : x
  2. Step 2: Convert to fraction form
    470,486.88/649,272.60 = 255,626.87/x
  3. Step 3: Cross multiply
    470,486.88x = 649,272.60 × 255,626.87
  4. Step 4: Simplify right side
    470,486.88x = 165,971,519,268.40
  5. Step 5: Solve for x
    x = 165,971,519,268.40/470,486.88
  6. Step 6: Final answer
    x = 352,765.46

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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.