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Finding the Fourth Proportional to 632,185.28, 872,415.31 and 345,705.37

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Solution

The fourth proportional to 632,185.28, 872,415.31 and 345,705.37 is: 477,073.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    632,185.28 : 872,415.31 = 345,705.37 : x
  2. Step 2: Convert to fraction form
    632,185.28/872,415.31 = 345,705.37/x
  3. Step 3: Cross multiply
    632,185.28x = 872,415.31 × 345,705.37
  4. Step 4: Simplify right side
    632,185.28x = 301,598,657,537.22
  5. Step 5: Solve for x
    x = 301,598,657,537.22/632,185.28
  6. Step 6: Final answer
    x = 477,073.20

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.