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Finding the Fourth Proportional to 403,485.28, 605,150 and 123,030.88

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Solution

The fourth proportional to 403,485.28, 605,150 and 123,030.88 is: 184,522.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,485.28 : 605,150 = 123,030.88 : x
  2. Step 2: Convert to fraction form
    403,485.28/605,150 = 123,030.88/x
  3. Step 3: Cross multiply
    403,485.28x = 605,150 × 123,030.88
  4. Step 4: Simplify right side
    403,485.28x = 74,452,137,032
  5. Step 5: Solve for x
    x = 74,452,137,032/403,485.28
  6. Step 6: Final answer
    x = 184,522.56

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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.