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Finding the Fourth Proportional to 497,205.34, 686,125.23 and 303,936.74

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Solution

The fourth proportional to 497,205.34, 686,125.23 and 303,936.74 is: 419,421.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    497,205.34 : 686,125.23 = 303,936.74 : x
  2. Step 2: Convert to fraction form
    497,205.34/686,125.23 = 303,936.74/x
  3. Step 3: Cross multiply
    497,205.34x = 686,125.23 × 303,936.74
  4. Step 4: Simplify right side
    497,205.34x = 208,538,665,637.95
  5. Step 5: Solve for x
    x = 208,538,665,637.95/497,205.34
  6. Step 6: Final answer
    x = 419,421.61

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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.