Home / 257,201.12-354,933.68-142,479.40

Finding the Fourth Proportional to 257,201.12, 354,933.68 and 142,479.40

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Solution

The fourth proportional to 257,201.12, 354,933.68 and 142,479.40 is: 196,619.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,201.12 : 354,933.68 = 142,479.40 : x
  2. Step 2: Convert to fraction form
    257,201.12/354,933.68 = 142,479.40/x
  3. Step 3: Cross multiply
    257,201.12x = 354,933.68 × 142,479.40
  4. Step 4: Simplify right side
    257,201.12x = 50,570,737,766.19
  5. Step 5: Solve for x
    x = 50,570,737,766.19/257,201.12
  6. Step 6: Final answer
    x = 196,619.43

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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.