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Finding the Fourth Proportional to 400,543.02, 600,912.81 and 120,060

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Solution

The fourth proportional to 400,543.02, 600,912.81 and 120,060 is: 180,119.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,543.02 : 600,912.81 = 120,060 : x
  2. Step 2: Convert to fraction form
    400,543.02/600,912.81 = 120,060/x
  3. Step 3: Cross multiply
    400,543.02x = 600,912.81 × 120,060
  4. Step 4: Simplify right side
    400,543.02x = 72,145,591,968.60
  5. Step 5: Solve for x
    x = 72,145,591,968.60/400,543.02
  6. Step 6: Final answer
    x = 180,119.46

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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.