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Finding the Fourth Proportional to 258,045, 356,089.92 and 143,331.02

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Solution

The fourth proportional to 258,045, 356,089.92 and 143,331.02 is: 197,790.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,045 : 356,089.92 = 143,331.02 : x
  2. Step 2: Convert to fraction form
    258,045/356,089.92 = 143,331.02/x
  3. Step 3: Cross multiply
    258,045x = 356,089.92 × 143,331.02
  4. Step 4: Simplify right side
    258,045x = 51,038,731,445.32
  5. Step 5: Solve for x
    x = 51,038,731,445.32/258,045
  6. Step 6: Final answer
    x = 197,790.04

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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.