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Finding the Fourth Proportional to 305,812.40, 457,422.60 and 274,449.20

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Solution

The fourth proportional to 305,812.40, 457,422.60 and 274,449.20 is: 410,510.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,812.40 : 457,422.60 = 274,449.20 : x
  2. Step 2: Convert to fraction form
    305,812.40/457,422.60 = 274,449.20/x
  3. Step 3: Cross multiply
    305,812.40x = 457,422.60 × 274,449.20
  4. Step 4: Simplify right side
    305,812.40x = 125,539,266,631.92
  5. Step 5: Solve for x
    x = 125,539,266,631.92/305,812.40
  6. Step 6: Final answer
    x = 410,510.71

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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.