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Finding the Fourth Proportional to 326,676.53, 489,783.12 and 126,828.47

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Solution

The fourth proportional to 326,676.53, 489,783.12 and 126,828.47 is: 190,152.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,676.53 : 489,783.12 = 126,828.47 : x
  2. Step 2: Convert to fraction form
    326,676.53/489,783.12 = 126,828.47/x
  3. Step 3: Cross multiply
    326,676.53x = 489,783.12 × 126,828.47
  4. Step 4: Simplify right side
    326,676.53x = 62,118,441,292.51
  5. Step 5: Solve for x
    x = 62,118,441,292.51/326,676.53
  6. Step 6: Final answer
    x = 190,152.76

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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.