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Finding the Fourth Proportional to 326,005.17, 488,966.22 and 126,188.85

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Solution

The fourth proportional to 326,005.17, 488,966.22 and 126,188.85 is: 189,267.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,005.17 : 488,966.22 = 126,188.85 : x
  2. Step 2: Convert to fraction form
    326,005.17/488,966.22 = 126,188.85/x
  3. Step 3: Cross multiply
    326,005.17x = 488,966.22 × 126,188.85
  4. Step 4: Simplify right side
    326,005.17x = 61,702,084,990.65
  5. Step 5: Solve for x
    x = 61,702,084,990.65/326,005.17
  6. Step 6: Final answer
    x = 189,267.20

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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.