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Finding the Fourth Proportional to 258,293.61, 356,424.68 and 143,563.25

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Solution

The fourth proportional to 258,293.61, 356,424.68 and 143,563.25 is: 198,105.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,293.61 : 356,424.68 = 143,563.25 : x
  2. Step 2: Convert to fraction form
    258,293.61/356,424.68 = 143,563.25/x
  3. Step 3: Cross multiply
    258,293.61x = 356,424.68 × 143,563.25
  4. Step 4: Simplify right side
    258,293.61x = 51,169,485,441.01
  5. Step 5: Solve for x
    x = 51,169,485,441.01/258,293.61
  6. Step 6: Final answer
    x = 198,105.89

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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.