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Finding the Fourth Proportional to 628,371.88, 942,703.61 and 207,622.24

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Solution

The fourth proportional to 628,371.88, 942,703.61 and 207,622.24 is: 311,481.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,371.88 : 942,703.61 = 207,622.24 : x
  2. Step 2: Convert to fraction form
    628,371.88/942,703.61 = 207,622.24/x
  3. Step 3: Cross multiply
    628,371.88x = 942,703.61 × 207,622.24
  4. Step 4: Simplify right side
    628,371.88x = 195,726,235,164.29
  5. Step 5: Solve for x
    x = 195,726,235,164.29/628,371.88
  6. Step 6: Final answer
    x = 311,481.53

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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.