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Finding the Fourth Proportional to 427,583.49, 641,395.89 and 112,040.70

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Solution

The fourth proportional to 427,583.49, 641,395.89 and 112,040.70 is: 168,066.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,583.49 : 641,395.89 = 112,040.70 : x
  2. Step 2: Convert to fraction form
    427,583.49/641,395.89 = 112,040.70/x
  3. Step 3: Cross multiply
    427,583.49x = 641,395.89 × 112,040.70
  4. Step 4: Simplify right side
    427,583.49x = 71,862,444,492.72
  5. Step 5: Solve for x
    x = 71,862,444,492.72/427,583.49
  6. Step 6: Final answer
    x = 168,066.46

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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.