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Finding the Fourth Proportional to 335,980.40, 502,804.20 and 307,986.80

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Solution

The fourth proportional to 335,980.40, 502,804.20 and 307,986.80 is: 460,910.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    335,980.40 : 502,804.20 = 307,986.80 : x
  2. Step 2: Convert to fraction form
    335,980.40/502,804.20 = 307,986.80/x
  3. Step 3: Cross multiply
    335,980.40x = 502,804.20 × 307,986.80
  4. Step 4: Simplify right side
    335,980.40x = 154,857,056,584.56
  5. Step 5: Solve for x
    x = 154,857,056,584.56/335,980.40
  6. Step 6: Final answer
    x = 460,910.98

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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.