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Finding the Fourth Proportional to 375,068.81, 516,975.57 and 279,540.65

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Solution

The fourth proportional to 375,068.81, 516,975.57 and 279,540.65 is: 385,304.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    375,068.81 : 516,975.57 = 279,540.65 : x
  2. Step 2: Convert to fraction form
    375,068.81/516,975.57 = 279,540.65/x
  3. Step 3: Cross multiply
    375,068.81x = 516,975.57 × 279,540.65
  4. Step 4: Simplify right side
    375,068.81x = 144,515,684,287.04
  5. Step 5: Solve for x
    x = 144,515,684,287.04/375,068.81
  6. Step 6: Final answer
    x = 385,304.46

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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.