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Finding the Fourth Proportional to 403,071.80, 605,190.90 and 303,927.80

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Solution

The fourth proportional to 403,071.80, 605,190.90 and 303,927.80 is: 456,331.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,071.80 : 605,190.90 = 303,927.80 : x
  2. Step 2: Convert to fraction form
    403,071.80/605,190.90 = 303,927.80/x
  3. Step 3: Cross multiply
    403,071.80x = 605,190.90 × 303,927.80
  4. Step 4: Simplify right side
    403,071.80x = 183,934,338,817.02
  5. Step 5: Solve for x
    x = 183,934,338,817.02/403,071.80
  6. Step 6: Final answer
    x = 456,331.45

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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.