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Finding the Fourth Proportional to 403,455.87, 605,274.53 and 123,001.47

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Solution

The fourth proportional to 403,455.87, 605,274.53 and 123,001.47 is: 184,529.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,455.87 : 605,274.53 = 123,001.47 : x
  2. Step 2: Convert to fraction form
    403,455.87/605,274.53 = 123,001.47/x
  3. Step 3: Cross multiply
    403,455.87x = 605,274.53 × 123,001.47
  4. Step 4: Simplify right side
    403,455.87x = 74,449,656,328.55
  5. Step 5: Solve for x
    x = 74,449,656,328.55/403,455.87
  6. Step 6: Final answer
    x = 184,529.86

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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.