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Finding the Fourth Proportional to 392,130.18, 588,019.23 and 111,580.74

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Solution

The fourth proportional to 392,130.18, 588,019.23 and 111,580.74 is: 167,321.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,130.18 : 588,019.23 = 111,580.74 : x
  2. Step 2: Convert to fraction form
    392,130.18/588,019.23 = 111,580.74/x
  3. Step 3: Cross multiply
    392,130.18x = 588,019.23 × 111,580.74
  4. Step 4: Simplify right side
    392,130.18x = 65,611,620,817.63
  5. Step 5: Solve for x
    x = 65,611,620,817.63/392,130.18
  6. Step 6: Final answer
    x = 167,321.02

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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.