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Finding the Fourth Proportional to 326,604.66, 489,781.04 and 126,898.76

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Solution

The fourth proportional to 326,604.66, 489,781.04 and 126,898.76 is: 190,299.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,604.66 : 489,781.04 = 126,898.76 : x
  2. Step 2: Convert to fraction form
    326,604.66/489,781.04 = 126,898.76/x
  3. Step 3: Cross multiply
    326,604.66x = 489,781.04 × 126,898.76
  4. Step 4: Simplify right side
    326,604.66x = 62,152,603,564.11
  5. Step 5: Solve for x
    x = 62,152,603,564.11/326,604.66
  6. Step 6: Final answer
    x = 190,299.19

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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.