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Finding the Fourth Proportional to 388,410,728.40, 582,616,092.60 and 158,254,347.60

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Solution

The fourth proportional to 388,410,728.40, 582,616,092.60 and 158,254,347.60 is: 237,381,521.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,410,728.40 : 582,616,092.60 = 158,254,347.60 : x
  2. Step 2: Convert to fraction form
    388,410,728.40/582,616,092.60 = 158,254,347.60/x
  3. Step 3: Cross multiply
    388,410,728.40x = 582,616,092.60 × 158,254,347.60
  4. Step 4: Simplify right side
    388,410,728.40x = 92,201,529,635,674,192
  5. Step 5: Solve for x
    x = 92,201,529,635,674,192/388,410,728.40
  6. Step 6: Final answer
    x = 237,381,521.40

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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.