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Finding the Fourth Proportional to 260,003.60, 358,971.72 and 212,371.28

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Solution

The fourth proportional to 260,003.60, 358,971.72 and 212,371.28 is: 293,208.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,003.60 : 358,971.72 = 212,371.28 : x
  2. Step 2: Convert to fraction form
    260,003.60/358,971.72 = 212,371.28/x
  3. Step 3: Cross multiply
    260,003.60x = 358,971.72 × 212,371.28
  4. Step 4: Simplify right side
    260,003.60x = 76,235,283,660.20
  5. Step 5: Solve for x
    x = 76,235,283,660.20/260,003.60
  6. Step 6: Final answer
    x = 293,208.57

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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.