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Finding the Fourth Proportional to 212,611,425.60, 318,469,240.80 and 212,611,425.60

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Solution

The fourth proportional to 212,611,425.60, 318,469,240.80 and 212,611,425.60 is: 318,469,240.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,611,425.60 : 318,469,240.80 = 212,611,425.60 : x
  2. Step 2: Convert to fraction form
    212,611,425.60/318,469,240.80 = 212,611,425.60/x
  3. Step 3: Cross multiply
    212,611,425.60x = 318,469,240.80 × 212,611,425.60
  4. Step 4: Simplify right side
    212,611,425.60x = 67,710,199,296,237,688
  5. Step 5: Solve for x
    x = 67,710,199,296,237,688/212,611,425.60
  6. Step 6: Final answer
    x = 318,469,240.80

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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.