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Finding the Fourth Proportional to 258,676.53, 356,975.97 and 143,960.01

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Solution

The fourth proportional to 258,676.53, 356,975.97 and 143,960.01 is: 198,666.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,676.53 : 356,975.97 = 143,960.01 : x
  2. Step 2: Convert to fraction form
    258,676.53/356,975.97 = 143,960.01/x
  3. Step 3: Cross multiply
    258,676.53x = 356,975.97 × 143,960.01
  4. Step 4: Simplify right side
    258,676.53x = 51,390,264,210.96
  5. Step 5: Solve for x
    x = 51,390,264,210.96/258,676.53
  6. Step 6: Final answer
    x = 198,666.13

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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.