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Finding the Fourth Proportional to 496,865.61, 745,468.52 and 212,438.97

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Solution

The fourth proportional to 496,865.61, 745,468.52 and 212,438.97 is: 318,731.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    496,865.61 : 745,468.52 = 212,438.97 : x
  2. Step 2: Convert to fraction form
    496,865.61/745,468.52 = 212,438.97/x
  3. Step 3: Cross multiply
    496,865.61x = 745,468.52 × 212,438.97
  4. Step 4: Simplify right side
    496,865.61x = 158,366,563,494.03
  5. Step 5: Solve for x
    x = 158,366,563,494.03/496,865.61
  6. Step 6: Final answer
    x = 318,731.18

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.