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Finding the Fourth Proportional to 528,691.98, 793,193.49 and 212,986.38

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Solution

The fourth proportional to 528,691.98, 793,193.49 and 212,986.38 is: 319,542.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,691.98 : 793,193.49 = 212,986.38 : x
  2. Step 2: Convert to fraction form
    528,691.98/793,193.49 = 212,986.38/x
  3. Step 3: Cross multiply
    528,691.98x = 793,193.49 × 212,986.38
  4. Step 4: Simplify right side
    528,691.98x = 168,939,410,074.67
  5. Step 5: Solve for x
    x = 168,939,410,074.67/528,691.98
  6. Step 6: Final answer
    x = 319,542.22

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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.