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Finding the Fourth Proportional to 628,856.06, 942,993.09 and 202,312.49

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Solution

The fourth proportional to 628,856.06, 942,993.09 and 202,312.49 is: 303,375.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,856.06 : 942,993.09 = 202,312.49 : x
  2. Step 2: Convert to fraction form
    628,856.06/942,993.09 = 202,312.49/x
  3. Step 3: Cross multiply
    628,856.06x = 942,993.09 × 202,312.49
  4. Step 4: Simplify right side
    628,856.06x = 190,779,275,375.73
  5. Step 5: Solve for x
    x = 190,779,275,375.73/628,856.06
  6. Step 6: Final answer
    x = 303,375.11

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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.