Home / 305,344.20-458,016.30-256,355.40

Finding the Fourth Proportional to 305,344.20, 458,016.30 and 256,355.40

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Solution

The fourth proportional to 305,344.20, 458,016.30 and 256,355.40 is: 384,533.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,344.20 : 458,016.30 = 256,355.40 : x
  2. Step 2: Convert to fraction form
    305,344.20/458,016.30 = 256,355.40/x
  3. Step 3: Cross multiply
    305,344.20x = 458,016.30 × 256,355.40
  4. Step 4: Simplify right side
    305,344.20x = 117,414,951,793.02
  5. Step 5: Solve for x
    x = 117,414,951,793.02/305,344.20
  6. Step 6: Final answer
    x = 384,533.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.