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Finding the Fourth Proportional to 279,470.94, 418,681.53 and 216,835.26

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Solution

The fourth proportional to 279,470.94, 418,681.53 and 216,835.26 is: 324,845.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,470.94 : 418,681.53 = 216,835.26 : x
  2. Step 2: Convert to fraction form
    279,470.94/418,681.53 = 216,835.26/x
  3. Step 3: Cross multiply
    279,470.94x = 418,681.53 × 216,835.26
  4. Step 4: Simplify right side
    279,470.94x = 90,784,918,414.75
  5. Step 5: Solve for x
    x = 90,784,918,414.75/279,470.94
  6. Step 6: Final answer
    x = 324,845.65

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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.