Home / 257,491.12-355,325.36-142,774.43

Finding the Fourth Proportional to 257,491.12, 355,325.36 and 142,774.43

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Solution

The fourth proportional to 257,491.12, 355,325.36 and 142,774.43 is: 197,021.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,491.12 : 355,325.36 = 142,774.43 : x
  2. Step 2: Convert to fraction form
    257,491.12/355,325.36 = 142,774.43/x
  3. Step 3: Cross multiply
    257,491.12x = 355,325.36 × 142,774.43
  4. Step 4: Simplify right side
    257,491.12x = 50,731,373,961.92
  5. Step 5: Solve for x
    x = 50,731,373,961.92/257,491.12
  6. Step 6: Final answer
    x = 197,021.84

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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.