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Finding the Fourth Proportional to 335,057.40, 501,905.70 and 208,308.60

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Solution

The fourth proportional to 335,057.40, 501,905.70 and 208,308.60 is: 312,039.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    335,057.40 : 501,905.70 = 208,308.60 : x
  2. Step 2: Convert to fraction form
    335,057.40/501,905.70 = 208,308.60/x
  3. Step 3: Cross multiply
    335,057.40x = 501,905.70 × 208,308.60
  4. Step 4: Simplify right side
    335,057.40x = 104,551,273,699.02
  5. Step 5: Solve for x
    x = 104,551,273,699.02/335,057.40
  6. Step 6: Final answer
    x = 312,039.89

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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.