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Finding the Fourth Proportional to 385,634.23, 532,168.57 and 213,548.79

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Solution

The fourth proportional to 385,634.23, 532,168.57 and 213,548.79 is: 294,693.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,634.23 : 532,168.57 = 213,548.79 : x
  2. Step 2: Convert to fraction form
    385,634.23/532,168.57 = 213,548.79/x
  3. Step 3: Cross multiply
    385,634.23x = 532,168.57 × 213,548.79
  4. Step 4: Simplify right side
    385,634.23x = 113,643,951,538.69
  5. Step 5: Solve for x
    x = 113,643,951,538.69/385,634.23
  6. Step 6: Final answer
    x = 294,693.63

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1.5x scale

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.