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Finding the Fourth Proportional to 434,087.80, 651,131.70 and 308,116.60

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Solution

The fourth proportional to 434,087.80, 651,131.70 and 308,116.60 is: 462,174.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    434,087.80 : 651,131.70 = 308,116.60 : x
  2. Step 2: Convert to fraction form
    434,087.80/651,131.70 = 308,116.60/x
  3. Step 3: Cross multiply
    434,087.80x = 651,131.70 × 308,116.60
  4. Step 4: Simplify right side
    434,087.80x = 200,624,485,556.22
  5. Step 5: Solve for x
    x = 200,624,485,556.22/434,087.80
  6. Step 6: Final answer
    x = 462,174.90

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1.5x scale

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.