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Finding the Fourth Proportional to 303,054.70, 455,566.20 and 214,918.60

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Solution

The fourth proportional to 303,054.70, 455,566.20 and 214,918.60 is: 323,075.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,054.70 : 455,566.20 = 214,918.60 : x
  2. Step 2: Convert to fraction form
    303,054.70/455,566.20 = 214,918.60/x
  3. Step 3: Cross multiply
    303,054.70x = 455,566.20 × 214,918.60
  4. Step 4: Simplify right side
    303,054.70x = 97,909,649,911.32
  5. Step 5: Solve for x
    x = 97,909,649,911.32/303,054.70
  6. Step 6: Final answer
    x = 323,075.83

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.