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Finding the Fourth Proportional to 388,504.40, 582,641.40 and 151,710.80

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Solution

The fourth proportional to 388,504.40, 582,641.40 and 151,710.80 is: 227,521.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,504.40 : 582,641.40 = 151,710.80 : x
  2. Step 2: Convert to fraction form
    388,504.40/582,641.40 = 151,710.80/x
  3. Step 3: Cross multiply
    388,504.40x = 582,641.40 × 151,710.80
  4. Step 4: Simplify right side
    388,504.40x = 88,392,992,907.12
  5. Step 5: Solve for x
    x = 88,392,992,907.12/388,504.40
  6. Step 6: Final answer
    x = 227,521.21

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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.