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Finding the Fourth Proportional to 303,655.36, 455,178.21 and 103,839.03

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Solution

The fourth proportional to 303,655.36, 455,178.21 and 103,839.03 is: 155,654.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,655.36 : 455,178.21 = 103,839.03 : x
  2. Step 2: Convert to fraction form
    303,655.36/455,178.21 = 103,839.03/x
  3. Step 3: Cross multiply
    303,655.36x = 455,178.21 × 103,839.03
  4. Step 4: Simplify right side
    303,655.36x = 47,265,263,284.34
  5. Step 5: Solve for x
    x = 47,265,263,284.34/303,655.36
  6. Step 6: Final answer
    x = 155,654.30

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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.