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Finding the Fourth Proportional to 389,372.76, 537,327 and 219,606.84

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Solution

The fourth proportional to 389,372.76, 537,327 and 219,606.84 is: 303,053.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,372.76 : 537,327 = 219,606.84 : x
  2. Step 2: Convert to fraction form
    389,372.76/537,327 = 219,606.84/x
  3. Step 3: Cross multiply
    389,372.76x = 537,327 × 219,606.84
  4. Step 4: Simplify right side
    389,372.76x = 118,000,684,516.68
  5. Step 5: Solve for x
    x = 118,000,684,516.68/389,372.76
  6. Step 6: Final answer
    x = 303,053.26

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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.