Home / 421,005.20-631,082.18-181,275.44

Finding the Fourth Proportional to 421,005.20, 631,082.18 and 181,275.44

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Solution

The fourth proportional to 421,005.20, 631,082.18 and 181,275.44 is: 271,729.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,005.20 : 631,082.18 = 181,275.44 : x
  2. Step 2: Convert to fraction form
    421,005.20/631,082.18 = 181,275.44/x
  3. Step 3: Cross multiply
    421,005.20x = 631,082.18 × 181,275.44
  4. Step 4: Simplify right side
    421,005.20x = 114,399,697,153.44
  5. Step 5: Solve for x
    x = 114,399,697,153.44/421,005.20
  6. Step 6: Final answer
    x = 271,729.89

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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.