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Finding the Fourth Proportional to 216,173.71, 324,752.63 and 156,386.60

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Solution

The fourth proportional to 216,173.71, 324,752.63 and 156,386.60 is: 234,935.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,173.71 : 324,752.63 = 156,386.60 : x
  2. Step 2: Convert to fraction form
    216,173.71/324,752.63 = 156,386.60/x
  3. Step 3: Cross multiply
    216,173.71x = 324,752.63 × 156,386.60
  4. Step 4: Simplify right side
    216,173.71x = 50,786,957,241.06
  5. Step 5: Solve for x
    x = 50,786,957,241.06/216,173.71
  6. Step 6: Final answer
    x = 234,935.87

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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.