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Finding the Fourth Proportional to 220,851.24, 330,858.90 and 130,623.72

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Solution

The fourth proportional to 220,851.24, 330,858.90 and 130,623.72 is: 195,688.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,851.24 : 330,858.90 = 130,623.72 : x
  2. Step 2: Convert to fraction form
    220,851.24/330,858.90 = 130,623.72/x
  3. Step 3: Cross multiply
    220,851.24x = 330,858.90 × 130,623.72
  4. Step 4: Simplify right side
    220,851.24x = 43,218,020,313.11
  5. Step 5: Solve for x
    x = 43,218,020,313.11/220,851.24
  6. Step 6: Final answer
    x = 195,688.38

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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.