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Finding the Fourth Proportional to 486,953.10, 671,993.82 and 272,093.31

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Solution

The fourth proportional to 486,953.10, 671,993.82 and 272,093.31 is: 375,487.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,953.10 : 671,993.82 = 272,093.31 : x
  2. Step 2: Convert to fraction form
    486,953.10/671,993.82 = 272,093.31/x
  3. Step 3: Cross multiply
    486,953.10x = 671,993.82 × 272,093.31
  4. Step 4: Simplify right side
    486,953.10x = 182,845,022,783.34
  5. Step 5: Solve for x
    x = 182,845,022,783.34/486,953.10
  6. Step 6: Final answer
    x = 375,487.95

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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.