Home / 258,819.80-357,171.18-145,642.64

Finding the Fourth Proportional to 258,819.80, 357,171.18 and 145,642.64

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Solution

The fourth proportional to 258,819.80, 357,171.18 and 145,642.64 is: 200,986.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,819.80 : 357,171.18 = 145,642.64 : x
  2. Step 2: Convert to fraction form
    258,819.80/357,171.18 = 145,642.64/x
  3. Step 3: Cross multiply
    258,819.80x = 357,171.18 × 145,642.64
  4. Step 4: Simplify right side
    258,819.80x = 52,019,353,587.12
  5. Step 5: Solve for x
    x = 52,019,353,587.12/258,819.80
  6. Step 6: Final answer
    x = 200,986.76

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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.