Home / 318,395.76-439,027.40-245,633.04

Finding the Fourth Proportional to 318,395.76, 439,027.40 and 245,633.04

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Solution

The fourth proportional to 318,395.76, 439,027.40 and 245,633.04 is: 338,696.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,395.76 : 439,027.40 = 245,633.04 : x
  2. Step 2: Convert to fraction form
    318,395.76/439,027.40 = 245,633.04/x
  3. Step 3: Cross multiply
    318,395.76x = 439,027.40 × 245,633.04
  4. Step 4: Simplify right side
    318,395.76x = 107,839,634,905.30
  5. Step 5: Solve for x
    x = 107,839,634,905.30/318,395.76
  6. Step 6: Final answer
    x = 338,696.83

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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.