Home / 257,144.12-354,851.04-142,418.21

Finding the Fourth Proportional to 257,144.12, 354,851.04 and 142,418.21

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Solution

The fourth proportional to 257,144.12, 354,851.04 and 142,418.21 is: 196,532.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,144.12 : 354,851.04 = 142,418.21 : x
  2. Step 2: Convert to fraction form
    257,144.12/354,851.04 = 142,418.21/x
  3. Step 3: Cross multiply
    257,144.12x = 354,851.04 × 142,418.21
  4. Step 4: Simplify right side
    257,144.12x = 50,537,249,933.44
  5. Step 5: Solve for x
    x = 50,537,249,933.44/257,144.12
  6. Step 6: Final answer
    x = 196,532.78

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1.5x scale

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.