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Finding the Fourth Proportional to 216,873.51, 325,378.31 and 130,418.88

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Solution

The fourth proportional to 216,873.51, 325,378.31 and 130,418.88 is: 195,669.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,873.51 : 325,378.31 = 130,418.88 : x
  2. Step 2: Convert to fraction form
    216,873.51/325,378.31 = 130,418.88/x
  3. Step 3: Cross multiply
    216,873.51x = 325,378.31 × 130,418.88
  4. Step 4: Simplify right side
    216,873.51x = 42,435,473,627.84
  5. Step 5: Solve for x
    x = 42,435,473,627.84/216,873.51
  6. Step 6: Final answer
    x = 195,669.24

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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.