Home / 211,365.47-316,956.05-79,945.31

Finding the Fourth Proportional to 211,365.47, 316,956.05 and 79,945.31

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Solution

The fourth proportional to 211,365.47, 316,956.05 and 79,945.31 is: 119,883.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,365.47 : 316,956.05 = 79,945.31 : x
  2. Step 2: Convert to fraction form
    211,365.47/316,956.05 = 79,945.31/x
  3. Step 3: Cross multiply
    211,365.47x = 316,956.05 × 79,945.31
  4. Step 4: Simplify right side
    211,365.47x = 25,339,150,366.08
  5. Step 5: Solve for x
    x = 25,339,150,366.08/211,365.47
  6. Step 6: Final answer
    x = 119,883.11

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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.