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Finding the Fourth Proportional to 326,423.55, 489,635.33 and 186,196.35

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Solution

The fourth proportional to 326,423.55, 489,635.33 and 186,196.35 is: 279,294.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,423.55 : 489,635.33 = 186,196.35 : x
  2. Step 2: Convert to fraction form
    326,423.55/489,635.33 = 186,196.35/x
  3. Step 3: Cross multiply
    326,423.55x = 489,635.33 × 186,196.35
  4. Step 4: Simplify right side
    326,423.55x = 91,168,310,346.06
  5. Step 5: Solve for x
    x = 91,168,310,346.06/326,423.55
  6. Step 6: Final answer
    x = 279,294.53

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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.