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Finding the Fourth Proportional to 303,208.05, 455,186.48 and 190,888.05

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Solution

The fourth proportional to 303,208.05, 455,186.48 and 190,888.05 is: 286,567.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,208.05 : 455,186.48 = 190,888.05 : x
  2. Step 2: Convert to fraction form
    303,208.05/455,186.48 = 190,888.05/x
  3. Step 3: Cross multiply
    303,208.05x = 455,186.48 × 190,888.05
  4. Step 4: Simplify right side
    303,208.05x = 86,889,658,599.12
  5. Step 5: Solve for x
    x = 86,889,658,599.12/303,208.05
  6. Step 6: Final answer
    x = 286,567.78

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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.