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Finding the Fourth Proportional to 300,577.61, 450,935.54 and 90,219.53

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Solution

The fourth proportional to 300,577.61, 450,935.54 and 90,219.53 is: 135,350.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,577.61 : 450,935.54 = 90,219.53 : x
  2. Step 2: Convert to fraction form
    300,577.61/450,935.54 = 90,219.53/x
  3. Step 3: Cross multiply
    300,577.61x = 450,935.54 × 90,219.53
  4. Step 4: Simplify right side
    300,577.61x = 40,683,192,028.00
  5. Step 5: Solve for x
    x = 40,683,192,028.00/300,577.61
  6. Step 6: Final answer
    x = 135,350.04

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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.