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Finding the Fourth Proportional to 268,343,992.80, 402,515,989.20 and 237,732,991.20

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Solution

The fourth proportional to 268,343,992.80, 402,515,989.20 and 237,732,991.20 is: 356,599,486.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,343,992.80 : 402,515,989.20 = 237,732,991.20 : x
  2. Step 2: Convert to fraction form
    268,343,992.80/402,515,989.20 = 237,732,991.20/x
  3. Step 3: Cross multiply
    268,343,992.80x = 402,515,989.20 × 237,732,991.20
  4. Step 4: Simplify right side
    268,343,992.80x = 95,691,330,118,342,880
  5. Step 5: Solve for x
    x = 95,691,330,118,342,880/268,343,992.80
  6. Step 6: Final answer
    x = 356,599,486.80

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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.