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Finding the Fourth Proportional to 265,736,861.20, 399,030,444.60 and 201,113,635.60

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Solution

The fourth proportional to 265,736,861.20, 399,030,444.60 and 201,113,635.60 is: 301,992,215.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,736,861.20 : 399,030,444.60 = 201,113,635.60 : x
  2. Step 2: Convert to fraction form
    265,736,861.20/399,030,444.60 = 201,113,635.60/x
  3. Step 3: Cross multiply
    265,736,861.20x = 399,030,444.60 × 201,113,635.60
  4. Step 4: Simplify right side
    265,736,861.20x = 80,250,463,428,590,384
  5. Step 5: Solve for x
    x = 80,250,463,428,590,384/265,736,861.20
  6. Step 6: Final answer
    x = 301,992,215.41

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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.