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Finding the Fourth Proportional to 403,302.80, 604,808.40 and 203,556.80

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Solution

The fourth proportional to 403,302.80, 604,808.40 and 203,556.80 is: 305,261.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,302.80 : 604,808.40 = 203,556.80 : x
  2. Step 2: Convert to fraction form
    403,302.80/604,808.40 = 203,556.80/x
  3. Step 3: Cross multiply
    403,302.80x = 604,808.40 × 203,556.80
  4. Step 4: Simplify right side
    403,302.80x = 123,112,862,517.12
  5. Step 5: Solve for x
    x = 123,112,862,517.12/403,302.80
  6. Step 6: Final answer
    x = 305,261.61

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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.