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Finding the Fourth Proportional to 386,596.60, 533,496.78 and 216,827.08

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Solution

The fourth proportional to 386,596.60, 533,496.78 and 216,827.08 is: 299,217.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,596.60 : 533,496.78 = 216,827.08 : x
  2. Step 2: Convert to fraction form
    386,596.60/533,496.78 = 216,827.08/x
  3. Step 3: Cross multiply
    386,596.60x = 533,496.78 × 216,827.08
  4. Step 4: Simplify right side
    386,596.60x = 115,676,548,996.80
  5. Step 5: Solve for x
    x = 115,676,548,996.80/386,596.60
  6. Step 6: Final answer
    x = 299,217.71

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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.