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Finding the Fourth Proportional to 662,590.33, 993,979.45 and 213,206.78

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Solution

The fourth proportional to 662,590.33, 993,979.45 and 213,206.78 is: 319,840.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,590.33 : 993,979.45 = 213,206.78 : x
  2. Step 2: Convert to fraction form
    662,590.33/993,979.45 = 213,206.78/x
  3. Step 3: Cross multiply
    662,590.33x = 993,979.45 × 213,206.78
  4. Step 4: Simplify right side
    662,590.33x = 211,923,160,672.13
  5. Step 5: Solve for x
    x = 211,923,160,672.13/662,590.33
  6. Step 6: Final answer
    x = 319,840.41

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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.