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Finding the Fourth Proportional to 545,982.40, 818,973.60 and 280,261.90

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Solution

The fourth proportional to 545,982.40, 818,973.60 and 280,261.90 is: 420,392.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,982.40 : 818,973.60 = 280,261.90 : x
  2. Step 2: Convert to fraction form
    545,982.40/818,973.60 = 280,261.90/x
  3. Step 3: Cross multiply
    545,982.40x = 818,973.60 × 280,261.90
  4. Step 4: Simplify right side
    545,982.40x = 229,527,097,185.84
  5. Step 5: Solve for x
    x = 229,527,097,185.84/545,982.40
  6. Step 6: Final answer
    x = 420,392.85

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Similar ratio
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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.