Home / 420,259.65-629,811.27-180,086.06

Finding the Fourth Proportional to 420,259.65, 629,811.27 and 180,086.06

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Solution

The fourth proportional to 420,259.65, 629,811.27 and 180,086.06 is: 269,881.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,259.65 : 629,811.27 = 180,086.06 : x
  2. Step 2: Convert to fraction form
    420,259.65/629,811.27 = 180,086.06/x
  3. Step 3: Cross multiply
    420,259.65x = 629,811.27 × 180,086.06
  4. Step 4: Simplify right side
    420,259.65x = 113,420,227,008.84
  5. Step 5: Solve for x
    x = 113,420,227,008.84/420,259.65
  6. Step 6: Final answer
    x = 269,881.32

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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.