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Finding the Fourth Proportional to 392,450.40, 588,675.60 and 155,671.20

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Solution

The fourth proportional to 392,450.40, 588,675.60 and 155,671.20 is: 233,506.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,450.40 : 588,675.60 = 155,671.20 : x
  2. Step 2: Convert to fraction form
    392,450.40/588,675.60 = 155,671.20/x
  3. Step 3: Cross multiply
    392,450.40x = 588,675.60 × 155,671.20
  4. Step 4: Simplify right side
    392,450.40x = 91,639,837,062.72
  5. Step 5: Solve for x
    x = 91,639,837,062.72/392,450.40
  6. Step 6: Final answer
    x = 233,506.80

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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.