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Finding the Fourth Proportional to 403,336.40, 605,004.80 and 166,418.69

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Solution

The fourth proportional to 403,336.40, 605,004.80 and 166,418.69 is: 249,628.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,336.40 : 605,004.80 = 166,418.69 : x
  2. Step 2: Convert to fraction form
    403,336.40/605,004.80 = 166,418.69/x
  3. Step 3: Cross multiply
    403,336.40x = 605,004.80 × 166,418.69
  4. Step 4: Simplify right side
    403,336.40x = 100,684,102,402.60
  5. Step 5: Solve for x
    x = 100,684,102,402.60/403,336.40
  6. Step 6: Final answer
    x = 249,628.11

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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.