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Finding the Fourth Proportional to 256,535.21, 354,019.07 and 143,357.96

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Solution

The fourth proportional to 256,535.21, 354,019.07 and 143,357.96 is: 197,834.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,535.21 : 354,019.07 = 143,357.96 : x
  2. Step 2: Convert to fraction form
    256,535.21/354,019.07 = 143,357.96/x
  3. Step 3: Cross multiply
    256,535.21x = 354,019.07 × 143,357.96
  4. Step 4: Simplify right side
    256,535.21x = 50,751,451,676.30
  5. Step 5: Solve for x
    x = 50,751,451,676.30/256,535.21
  6. Step 6: Final answer
    x = 197,834.25

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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.