Home / 210,815.88-316,348.44-77,789.64

Finding the Fourth Proportional to 210,815.88, 316,348.44 and 77,789.64

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Solution

The fourth proportional to 210,815.88, 316,348.44 and 77,789.64 is: 116,730.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,815.88 : 316,348.44 = 77,789.64 : x
  2. Step 2: Convert to fraction form
    210,815.88/316,348.44 = 77,789.64/x
  3. Step 3: Cross multiply
    210,815.88x = 316,348.44 × 77,789.64
  4. Step 4: Simplify right side
    210,815.88x = 24,608,631,262.16
  5. Step 5: Solve for x
    x = 24,608,631,262.16/210,815.88
  6. Step 6: Final answer
    x = 116,730.44

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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.