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Finding the Fourth Proportional to 262,431.70, 393,710.02 and 84,938.69

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Solution

The fourth proportional to 262,431.70, 393,710.02 and 84,938.69 is: 127,428.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,431.70 : 393,710.02 = 84,938.69 : x
  2. Step 2: Convert to fraction form
    262,431.70/393,710.02 = 84,938.69/x
  3. Step 3: Cross multiply
    262,431.70x = 393,710.02 × 84,938.69
  4. Step 4: Simplify right side
    262,431.70x = 33,441,214,110.60
  5. Step 5: Solve for x
    x = 33,441,214,110.60/262,431.70
  6. Step 6: Final answer
    x = 127,428.26

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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.