Home / 262,515.20-393,319.20-121,985.60

Finding the Fourth Proportional to 262,515.20, 393,319.20 and 121,985.60

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Solution

The fourth proportional to 262,515.20, 393,319.20 and 121,985.60 is: 182,767.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,515.20 : 393,319.20 = 121,985.60 : x
  2. Step 2: Convert to fraction form
    262,515.20/393,319.20 = 121,985.60/x
  3. Step 3: Cross multiply
    262,515.20x = 393,319.20 × 121,985.60
  4. Step 4: Simplify right side
    262,515.20x = 47,979,278,603.52
  5. Step 5: Solve for x
    x = 47,979,278,603.52/262,515.20
  6. Step 6: Final answer
    x = 182,767.62

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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.