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Finding the Fourth Proportional to 568,017.60, 851,702.40 and 213,043.20

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Solution

The fourth proportional to 568,017.60, 851,702.40 and 213,043.20 is: 319,443.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    568,017.60 : 851,702.40 = 213,043.20 : x
  2. Step 2: Convert to fraction form
    568,017.60/851,702.40 = 213,043.20/x
  3. Step 3: Cross multiply
    568,017.60x = 851,702.40 × 213,043.20
  4. Step 4: Simplify right side
    568,017.60x = 181,449,404,743.68
  5. Step 5: Solve for x
    x = 181,449,404,743.68/568,017.60
  6. Step 6: Final answer
    x = 319,443.28

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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.