Home / 257,714.42-355,665.38-143,014.78

Finding the Fourth Proportional to 257,714.42, 355,665.38 and 143,014.78

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Solution

The fourth proportional to 257,714.42, 355,665.38 and 143,014.78 is: 197,371.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,714.42 : 355,665.38 = 143,014.78 : x
  2. Step 2: Convert to fraction form
    257,714.42/355,665.38 = 143,014.78/x
  3. Step 3: Cross multiply
    257,714.42x = 355,665.38 × 143,014.78
  4. Step 4: Simplify right side
    257,714.42x = 50,865,406,074.32
  5. Step 5: Solve for x
    x = 50,865,406,074.32/257,714.42
  6. Step 6: Final answer
    x = 197,371.21

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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.