Home / 256,847.12-354,482.60-143,693.20

Finding the Fourth Proportional to 256,847.12, 354,482.60 and 143,693.20

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Solution

The fourth proportional to 256,847.12, 354,482.60 and 143,693.20 is: 198,315.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,847.12 : 354,482.60 = 143,693.20 : x
  2. Step 2: Convert to fraction form
    256,847.12/354,482.60 = 143,693.20/x
  3. Step 3: Cross multiply
    256,847.12x = 354,482.60 × 143,693.20
  4. Step 4: Simplify right side
    256,847.12x = 50,936,739,138.32
  5. Step 5: Solve for x
    x = 50,936,739,138.32/256,847.12
  6. Step 6: Final answer
    x = 198,315.40

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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.