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Finding the Fourth Proportional to 258,043.25, 356,087.50 and 143,329.28

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Solution

The fourth proportional to 258,043.25, 356,087.50 and 143,329.28 is: 197,787.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,043.25 : 356,087.50 = 143,329.28 : x
  2. Step 2: Convert to fraction form
    258,043.25/356,087.50 = 143,329.28/x
  3. Step 3: Cross multiply
    258,043.25x = 356,087.50 × 143,329.28
  4. Step 4: Simplify right side
    258,043.25x = 51,037,762,853.24
  5. Step 5: Solve for x
    x = 51,037,762,853.24/258,043.25
  6. Step 6: Final answer
    x = 197,787.63

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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.