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Finding the Fourth Proportional to 403,562.90, 605,085.15 and 166,999.70

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Solution

The fourth proportional to 403,562.90, 605,085.15 and 166,999.70 is: 250,392.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,562.90 : 605,085.15 = 166,999.70 : x
  2. Step 2: Convert to fraction form
    403,562.90/605,085.15 = 166,999.70/x
  3. Step 3: Cross multiply
    403,562.90x = 605,085.15 × 166,999.70
  4. Step 4: Simplify right side
    403,562.90x = 101,049,038,524.46
  5. Step 5: Solve for x
    x = 101,049,038,524.46/403,562.90
  6. Step 6: Final answer
    x = 250,392.29

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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.