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Finding the Fourth Proportional to 258,043, 356,087.16 and 143,329.02

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Solution

The fourth proportional to 258,043, 356,087.16 and 143,329.02 is: 197,787.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,043 : 356,087.16 = 143,329.02 : x
  2. Step 2: Convert to fraction form
    258,043/356,087.16 = 143,329.02/x
  3. Step 3: Cross multiply
    258,043x = 356,087.16 × 143,329.02
  4. Step 4: Simplify right side
    258,043x = 51,037,623,677.38
  5. Step 5: Solve for x
    x = 51,037,623,677.38/258,043
  6. Step 6: Final answer
    x = 197,787.28

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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.