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Finding the Fourth Proportional to 309,996.60, 465,059.70 and 99,655.80

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Solution

The fourth proportional to 309,996.60, 465,059.70 and 99,655.80 is: 149,504.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,996.60 : 465,059.70 = 99,655.80 : x
  2. Step 2: Convert to fraction form
    309,996.60/465,059.70 = 99,655.80/x
  3. Step 3: Cross multiply
    309,996.60x = 465,059.70 × 99,655.80
  4. Step 4: Simplify right side
    309,996.60x = 46,345,896,451.26
  5. Step 5: Solve for x
    x = 46,345,896,451.26/309,996.60
  6. Step 6: Final answer
    x = 149,504.53

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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.