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Finding the Fourth Proportional to 403,610.88, 556,401.12 and 282,376.56

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Solution

The fourth proportional to 403,610.88, 556,401.12 and 282,376.56 is: 389,272.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,610.88 : 556,401.12 = 282,376.56 : x
  2. Step 2: Convert to fraction form
    403,610.88/556,401.12 = 282,376.56/x
  3. Step 3: Cross multiply
    403,610.88x = 556,401.12 × 282,376.56
  4. Step 4: Simplify right side
    403,610.88x = 157,114,634,245.75
  5. Step 5: Solve for x
    x = 157,114,634,245.75/403,610.88
  6. Step 6: Final answer
    x = 389,272.54

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.