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Finding the Fourth Proportional to 319,479.57, 440,686.44 and 204,719.58

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Solution

The fourth proportional to 319,479.57, 440,686.44 and 204,719.58 is: 282,387.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,479.57 : 440,686.44 = 204,719.58 : x
  2. Step 2: Convert to fraction form
    319,479.57/440,686.44 = 204,719.58/x
  3. Step 3: Cross multiply
    319,479.57x = 440,686.44 × 204,719.58
  4. Step 4: Simplify right side
    319,479.57x = 90,217,142,908.50
  5. Step 5: Solve for x
    x = 90,217,142,908.50/319,479.57
  6. Step 6: Final answer
    x = 282,387.83

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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.