Home / 310,821.30-428,929.14-174,855.21

Finding the Fourth Proportional to 310,821.30, 428,929.14 and 174,855.21

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Solution

The fourth proportional to 310,821.30, 428,929.14 and 174,855.21 is: 241,297.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,821.30 : 428,929.14 = 174,855.21 : x
  2. Step 2: Convert to fraction form
    310,821.30/428,929.14 = 174,855.21/x
  3. Step 3: Cross multiply
    310,821.30x = 428,929.14 × 174,855.21
  4. Step 4: Simplify right side
    310,821.30x = 75,000,494,849.82
  5. Step 5: Solve for x
    x = 75,000,494,849.82/310,821.30
  6. Step 6: Final answer
    x = 241,297.80

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.