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Finding the Fourth Proportional to 388,358.40, 582,537.60 and 151,708.80

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Solution

The fourth proportional to 388,358.40, 582,537.60 and 151,708.80 is: 227,563.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,358.40 : 582,537.60 = 151,708.80 : x
  2. Step 2: Convert to fraction form
    388,358.40/582,537.60 = 151,708.80/x
  3. Step 3: Cross multiply
    388,358.40x = 582,537.60 × 151,708.80
  4. Step 4: Simplify right side
    388,358.40x = 88,376,080,250.88
  5. Step 5: Solve for x
    x = 88,376,080,250.88/388,358.40
  6. Step 6: Final answer
    x = 227,563.20

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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.