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Finding the Fourth Proportional to 258,507.59, 356,735.35 and 143,783.77

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Solution

The fourth proportional to 258,507.59, 356,735.35 and 143,783.77 is: 198,418.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,507.59 : 356,735.35 = 143,783.77 : x
  2. Step 2: Convert to fraction form
    258,507.59/356,735.35 = 143,783.77/x
  3. Step 3: Cross multiply
    258,507.59x = 356,735.35 × 143,783.77
  4. Step 4: Simplify right side
    258,507.59x = 51,292,753,515.27
  5. Step 5: Solve for x
    x = 51,292,753,515.27/258,507.59
  6. Step 6: Final answer
    x = 198,418.75

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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.