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Finding the Fourth Proportional to 421,963.96, 582,316.68 and 230,995.12

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Solution

The fourth proportional to 421,963.96, 582,316.68 and 230,995.12 is: 318,776.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,963.96 : 582,316.68 = 230,995.12 : x
  2. Step 2: Convert to fraction form
    421,963.96/582,316.68 = 230,995.12/x
  3. Step 3: Cross multiply
    421,963.96x = 582,316.68 × 230,995.12
  4. Step 4: Simplify right side
    421,963.96x = 134,512,311,374.60
  5. Step 5: Solve for x
    x = 134,512,311,374.60/421,963.96
  6. Step 6: Final answer
    x = 318,776.78

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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.