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Finding the Fourth Proportional to 393,280.20, 590,066.10 and 156,792.60

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Solution

The fourth proportional to 393,280.20, 590,066.10 and 156,792.60 is: 235,247.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,280.20 : 590,066.10 = 156,792.60 : x
  2. Step 2: Convert to fraction form
    393,280.20/590,066.10 = 156,792.60/x
  3. Step 3: Cross multiply
    393,280.20x = 590,066.10 × 156,792.60
  4. Step 4: Simplify right side
    393,280.20x = 92,517,997,990.86
  5. Step 5: Solve for x
    x = 92,517,997,990.86/393,280.20
  6. Step 6: Final answer
    x = 235,247.03

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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.