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Finding the Fourth Proportional to 326,609.91, 489,788.91 and 126,904.01

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Solution

The fourth proportional to 326,609.91, 489,788.91 and 126,904.01 is: 190,307.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,609.91 : 489,788.91 = 126,904.01 : x
  2. Step 2: Convert to fraction form
    326,609.91/489,788.91 = 126,904.01/x
  3. Step 3: Cross multiply
    326,609.91x = 489,788.91 × 126,904.01
  4. Step 4: Simplify right side
    326,609.91x = 62,156,174,283.58
  5. Step 5: Solve for x
    x = 62,156,174,283.58/326,609.91
  6. Step 6: Final answer
    x = 190,307.07

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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.