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Finding the Fourth Proportional to 216,336.71, 324,505.31 and 56,412.50

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Solution

The fourth proportional to 216,336.71, 324,505.31 and 56,412.50 is: 84,618.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,336.71 : 324,505.31 = 56,412.50 : x
  2. Step 2: Convert to fraction form
    216,336.71/324,505.31 = 56,412.50/x
  3. Step 3: Cross multiply
    216,336.71x = 324,505.31 × 56,412.50
  4. Step 4: Simplify right side
    216,336.71x = 18,306,155,800.38
  5. Step 5: Solve for x
    x = 18,306,155,800.38/216,336.71
  6. Step 6: Final answer
    x = 84,618.81

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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.