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Finding the Fourth Proportional to 258,141.88, 356,237.22 and 143,420.68

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Solution

The fourth proportional to 258,141.88, 356,237.22 and 143,420.68 is: 197,921.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,141.88 : 356,237.22 = 143,420.68 : x
  2. Step 2: Convert to fraction form
    258,141.88/356,237.22 = 143,420.68/x
  3. Step 3: Cross multiply
    258,141.88x = 356,237.22 × 143,420.68
  4. Step 4: Simplify right side
    258,141.88x = 51,091,784,333.71
  5. Step 5: Solve for x
    x = 51,091,784,333.71/258,141.88
  6. Step 6: Final answer
    x = 197,921.33

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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.