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Finding the Fourth Proportional to 403,997.80, 605,612.70 and 151,210.60

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Solution

The fourth proportional to 403,997.80, 605,612.70 and 151,210.60 is: 226,672.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,997.80 : 605,612.70 = 151,210.60 : x
  2. Step 2: Convert to fraction form
    403,997.80/605,612.70 = 151,210.60/x
  3. Step 3: Cross multiply
    403,997.80x = 605,612.70 × 151,210.60
  4. Step 4: Simplify right side
    403,997.80x = 91,575,059,734.62
  5. Step 5: Solve for x
    x = 91,575,059,734.62/403,997.80
  6. Step 6: Final answer
    x = 226,672.17

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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.