Home / 257,831.74-355,829.22-143,121.16

Finding the Fourth Proportional to 257,831.74, 355,829.22 and 143,121.16

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Solution

The fourth proportional to 257,831.74, 355,829.22 and 143,121.16 is: 197,519.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,831.74 : 355,829.22 = 143,121.16 : x
  2. Step 2: Convert to fraction form
    257,831.74/355,829.22 = 143,121.16/x
  3. Step 3: Cross multiply
    257,831.74x = 355,829.22 × 143,121.16
  4. Step 4: Simplify right side
    257,831.74x = 50,926,690,728.30
  5. Step 5: Solve for x
    x = 50,926,690,728.30/257,831.74
  6. Step 6: Final answer
    x = 197,519.09

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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.