Home / 262,511.20-393,313.20-121,981.60

Finding the Fourth Proportional to 262,511.20, 393,313.20 and 121,981.60

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Solution

The fourth proportional to 262,511.20, 393,313.20 and 121,981.60 is: 182,761.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,511.20 : 393,313.20 = 121,981.60 : x
  2. Step 2: Convert to fraction form
    262,511.20/393,313.20 = 121,981.60/x
  3. Step 3: Cross multiply
    262,511.20x = 393,313.20 × 121,981.60
  4. Step 4: Simplify right side
    262,511.20x = 47,976,973,437.12
  5. Step 5: Solve for x
    x = 47,976,973,437.12/262,511.20
  6. Step 6: Final answer
    x = 182,761.62

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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.