Home / 256,841.37-354,421.85-143,642.25

Finding the Fourth Proportional to 256,841.37, 354,421.85 and 143,642.25

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Solution

The fourth proportional to 256,841.37, 354,421.85 and 143,642.25 is: 198,215.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,841.37 : 354,421.85 = 143,642.25 : x
  2. Step 2: Convert to fraction form
    256,841.37/354,421.85 = 143,642.25/x
  3. Step 3: Cross multiply
    256,841.37x = 354,421.85 × 143,642.25
  4. Step 4: Simplify right side
    256,841.37x = 50,909,951,264.95
  5. Step 5: Solve for x
    x = 50,909,951,264.95/256,841.37
  6. Step 6: Final answer
    x = 198,215.54

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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.