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Finding the Fourth Proportional to 545,311.28, 818,340.53 and 190,325.30

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Solution

The fourth proportional to 545,311.28, 818,340.53 and 190,325.30 is: 285,618.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,311.28 : 818,340.53 = 190,325.30 : x
  2. Step 2: Convert to fraction form
    545,311.28/818,340.53 = 190,325.30/x
  3. Step 3: Cross multiply
    545,311.28x = 818,340.53 × 190,325.30
  4. Step 4: Simplify right side
    545,311.28x = 155,750,903,517.16
  5. Step 5: Solve for x
    x = 155,750,903,517.16/545,311.28
  6. Step 6: Final answer
    x = 285,618.34

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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.