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Finding the Fourth Proportional to 326,122.45, 489,178.80 and 113,045.47

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Solution

The fourth proportional to 326,122.45, 489,178.80 and 113,045.47 is: 169,566.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,122.45 : 489,178.80 = 113,045.47 : x
  2. Step 2: Convert to fraction form
    326,122.45/489,178.80 = 113,045.47/x
  3. Step 3: Cross multiply
    326,122.45x = 489,178.80 × 113,045.47
  4. Step 4: Simplify right side
    326,122.45x = 55,299,447,360.04
  5. Step 5: Solve for x
    x = 55,299,447,360.04/326,122.45
  6. Step 6: Final answer
    x = 169,566.52

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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.