Home / 421,008.20-631,086.68-181,278.44

Finding the Fourth Proportional to 421,008.20, 631,086.68 and 181,278.44

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Solution

The fourth proportional to 421,008.20, 631,086.68 and 181,278.44 is: 271,734.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,008.20 : 631,086.68 = 181,278.44 : x
  2. Step 2: Convert to fraction form
    421,008.20/631,086.68 = 181,278.44/x
  3. Step 3: Cross multiply
    421,008.20x = 631,086.68 × 181,278.44
  4. Step 4: Simplify right side
    421,008.20x = 114,402,408,855.18
  5. Step 5: Solve for x
    x = 114,402,408,855.18/421,008.20
  6. Step 6: Final answer
    x = 271,734.40

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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.