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Finding the Fourth Proportional to 259,750.20, 389,610.72 and 70,207.77

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Solution

The fourth proportional to 259,750.20, 389,610.72 and 70,207.77 is: 105,307.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,750.20 : 389,610.72 = 70,207.77 : x
  2. Step 2: Convert to fraction form
    259,750.20/389,610.72 = 70,207.77/x
  3. Step 3: Cross multiply
    259,750.20x = 389,610.72 × 70,207.77
  4. Step 4: Simplify right side
    259,750.20x = 27,353,699,819.29
  5. Step 5: Solve for x
    x = 27,353,699,819.29/259,750.20
  6. Step 6: Final answer
    x = 105,307.71

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.