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Finding the Fourth Proportional to 403,999.08, 558,526.50 and 303,222.12

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Solution

The fourth proportional to 403,999.08, 558,526.50 and 303,222.12 is: 419,202.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,999.08 : 558,526.50 = 303,222.12 : x
  2. Step 2: Convert to fraction form
    403,999.08/558,526.50 = 303,222.12/x
  3. Step 3: Cross multiply
    403,999.08x = 558,526.50 × 303,222.12
  4. Step 4: Simplify right side
    403,999.08x = 169,357,589,406.18
  5. Step 5: Solve for x
    x = 169,357,589,406.18/403,999.08
  6. Step 6: Final answer
    x = 419,202.91

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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.