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Finding the Fourth Proportional to 388,589.64, 535,949.76 and 252,667.56

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Solution

The fourth proportional to 388,589.64, 535,949.76 and 252,667.56 is: 348,483.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,589.64 : 535,949.76 = 252,667.56 : x
  2. Step 2: Convert to fraction form
    388,589.64/535,949.76 = 252,667.56/x
  3. Step 3: Cross multiply
    388,589.64x = 535,949.76 × 252,667.56
  4. Step 4: Simplify right side
    388,589.64x = 135,417,118,141.79
  5. Step 5: Solve for x
    x = 135,417,118,141.79/388,589.64
  6. Step 6: Final answer
    x = 348,483.60

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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.