Home / 256,078.71-353,424.20-142,908.75

Finding the Fourth Proportional to 256,078.71, 353,424.20 and 142,908.75

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Solution

The fourth proportional to 256,078.71, 353,424.20 and 142,908.75 is: 197,233.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,078.71 : 353,424.20 = 142,908.75 : x
  2. Step 2: Convert to fraction form
    256,078.71/353,424.20 = 142,908.75/x
  3. Step 3: Cross multiply
    256,078.71x = 353,424.20 × 142,908.75
  4. Step 4: Simplify right side
    256,078.71x = 50,507,409,927.21
  5. Step 5: Solve for x
    x = 50,507,409,927.21/256,078.71
  6. Step 6: Final answer
    x = 197,233.93

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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.