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Finding the Fourth Proportional to 305,828.31, 422,043.08 and 171,692.31

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Solution

The fourth proportional to 305,828.31, 422,043.08 and 171,692.31 is: 236,935.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,828.31 : 422,043.08 = 171,692.31 : x
  2. Step 2: Convert to fraction form
    305,828.31/422,043.08 = 171,692.31/x
  3. Step 3: Cross multiply
    305,828.31x = 422,043.08 × 171,692.31
  4. Step 4: Simplify right side
    305,828.31x = 72,461,551,324.71
  5. Step 5: Solve for x
    x = 72,461,551,324.71/305,828.31
  6. Step 6: Final answer
    x = 236,935.39

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1.5x scale

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.