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Finding the Fourth Proportional to 483,969.60, 725,507.28 and 259,486.20

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Solution

The fourth proportional to 483,969.60, 725,507.28 and 259,486.20 is: 388,989.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,969.60 : 725,507.28 = 259,486.20 : x
  2. Step 2: Convert to fraction form
    483,969.60/725,507.28 = 259,486.20/x
  3. Step 3: Cross multiply
    483,969.60x = 725,507.28 × 259,486.20
  4. Step 4: Simplify right side
    483,969.60x = 188,259,127,159.54
  5. Step 5: Solve for x
    x = 188,259,127,159.54/483,969.60
  6. Step 6: Final answer
    x = 388,989.57

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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.