Home / 319,935.90-479,607.21-120,388.53

Finding the Fourth Proportional to 319,935.90, 479,607.21 and 120,388.53

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Solution

The fourth proportional to 319,935.90, 479,607.21 and 120,388.53 is: 180,471.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,935.90 : 479,607.21 = 120,388.53 : x
  2. Step 2: Convert to fraction form
    319,935.90/479,607.21 = 120,388.53/x
  3. Step 3: Cross multiply
    319,935.90x = 479,607.21 × 120,388.53
  4. Step 4: Simplify right side
    319,935.90x = 57,739,206,989.30
  5. Step 5: Solve for x
    x = 57,739,206,989.30/319,935.90
  6. Step 6: Final answer
    x = 180,471.17

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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.