Home / 256,821.12-354,393.90-143,622

Finding the Fourth Proportional to 256,821.12, 354,393.90 and 143,622

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Solution

The fourth proportional to 256,821.12, 354,393.90 and 143,622 is: 198,187.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,821.12 : 354,393.90 = 143,622 : x
  2. Step 2: Convert to fraction form
    256,821.12/354,393.90 = 143,622/x
  3. Step 3: Cross multiply
    256,821.12x = 354,393.90 × 143,622
  4. Step 4: Simplify right side
    256,821.12x = 50,898,760,705.80
  5. Step 5: Solve for x
    x = 50,898,760,705.80/256,821.12
  6. Step 6: Final answer
    x = 198,187.60

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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.