Home / 298,819.72-447,985.33-138,995.30

Finding the Fourth Proportional to 298,819.72, 447,985.33 and 138,995.30

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Solution

The fourth proportional to 298,819.72, 447,985.33 and 138,995.30 is: 208,379.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,819.72 : 447,985.33 = 138,995.30 : x
  2. Step 2: Convert to fraction form
    298,819.72/447,985.33 = 138,995.30/x
  3. Step 3: Cross multiply
    298,819.72x = 447,985.33 × 138,995.30
  4. Step 4: Simplify right side
    298,819.72x = 62,267,854,373.36
  5. Step 5: Solve for x
    x = 62,267,854,373.36/298,819.72
  6. Step 6: Final answer
    x = 208,379.34

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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.