Home / 305,364.20-458,046.30-256,375.40

Finding the Fourth Proportional to 305,364.20, 458,046.30 and 256,375.40

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Solution

The fourth proportional to 305,364.20, 458,046.30 and 256,375.40 is: 384,563.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,364.20 : 458,046.30 = 256,375.40 : x
  2. Step 2: Convert to fraction form
    305,364.20/458,046.30 = 256,375.40/x
  3. Step 3: Cross multiply
    305,364.20x = 458,046.30 × 256,375.40
  4. Step 4: Simplify right side
    305,364.20x = 117,431,803,381.02
  5. Step 5: Solve for x
    x = 117,431,803,381.02/305,364.20
  6. Step 6: Final answer
    x = 384,563.10

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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.