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Finding the Fourth Proportional to 328,194.65, 492,292.05 and 103,572.57

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Solution

The fourth proportional to 328,194.65, 492,292.05 and 103,572.57 is: 155,358.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,194.65 : 492,292.05 = 103,572.57 : x
  2. Step 2: Convert to fraction form
    328,194.65/492,292.05 = 103,572.57/x
  3. Step 3: Cross multiply
    328,194.65x = 492,292.05 × 103,572.57
  4. Step 4: Simplify right side
    328,194.65x = 50,987,954,266.77
  5. Step 5: Solve for x
    x = 50,987,954,266.77/328,194.65
  6. Step 6: Final answer
    x = 155,358.88

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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.