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Finding the Fourth Proportional to 388,608,448.40, 582,912,672.60 and 101,394,112.40

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Solution

The fourth proportional to 388,608,448.40, 582,912,672.60 and 101,394,112.40 is: 152,091,168.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,608,448.40 : 582,912,672.60 = 101,394,112.40 : x
  2. Step 2: Convert to fraction form
    388,608,448.40/582,912,672.60 = 101,394,112.40/x
  3. Step 3: Cross multiply
    388,608,448.40x = 582,912,672.60 × 101,394,112.40
  4. Step 4: Simplify right side
    388,608,448.40x = 59,103,913,044,988,808
  5. Step 5: Solve for x
    x = 59,103,913,044,988,808/388,608,448.40
  6. Step 6: Final answer
    x = 152,091,168.60

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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.