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Finding the Fourth Proportional to 216,815.09, 325,222.64 and 142,925.81

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Solution

The fourth proportional to 216,815.09, 325,222.64 and 142,925.81 is: 214,388.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,815.09 : 325,222.64 = 142,925.81 : x
  2. Step 2: Convert to fraction form
    216,815.09/325,222.64 = 142,925.81/x
  3. Step 3: Cross multiply
    216,815.09x = 325,222.64 × 142,925.81
  4. Step 4: Simplify right side
    216,815.09x = 46,482,709,252.34
  5. Step 5: Solve for x
    x = 46,482,709,252.34/216,815.09
  6. Step 6: Final answer
    x = 214,388.72

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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.