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Finding the Fourth Proportional to 628,309.89, 942,552.45 and 201,858.66

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Solution

The fourth proportional to 628,309.89, 942,552.45 and 201,858.66 is: 302,816.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,309.89 : 942,552.45 = 201,858.66 : x
  2. Step 2: Convert to fraction form
    628,309.89/942,552.45 = 201,858.66/x
  3. Step 3: Cross multiply
    628,309.89x = 942,552.45 × 201,858.66
  4. Step 4: Simplify right side
    628,309.89x = 190,262,374,536.72
  5. Step 5: Solve for x
    x = 190,262,374,536.72/628,309.89
  6. Step 6: Final answer
    x = 302,816.14

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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.