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Finding the Fourth Proportional to 389,065.42, 536,910.28 and 210,217.42

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Solution

The fourth proportional to 389,065.42, 536,910.28 and 210,217.42 is: 290,100.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,065.42 : 536,910.28 = 210,217.42 : x
  2. Step 2: Convert to fraction form
    389,065.42/536,910.28 = 210,217.42/x
  3. Step 3: Cross multiply
    389,065.42x = 536,910.28 × 210,217.42
  4. Step 4: Simplify right side
    389,065.42x = 112,867,893,833.08
  5. Step 5: Solve for x
    x = 112,867,893,833.08/389,065.42
  6. Step 6: Final answer
    x = 290,100.04

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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.