Home / 420,988.29-631,056.93-181,258.56

Finding the Fourth Proportional to 420,988.29, 631,056.93 and 181,258.56

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Solution

The fourth proportional to 420,988.29, 631,056.93 and 181,258.56 is: 271,704.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,988.29 : 631,056.93 = 181,258.56 : x
  2. Step 2: Convert to fraction form
    420,988.29/631,056.93 = 181,258.56/x
  3. Step 3: Cross multiply
    420,988.29x = 631,056.93 × 181,258.56
  4. Step 4: Simplify right side
    420,988.29x = 114,384,469,730.10
  5. Step 5: Solve for x
    x = 114,384,469,730.10/420,988.29
  6. Step 6: Final answer
    x = 271,704.64

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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.