Home / 211,970.22-317,892.09-69,789.30

Finding the Fourth Proportional to 211,970.22, 317,892.09 and 69,789.30

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Solution

The fourth proportional to 211,970.22, 317,892.09 and 69,789.30 is: 104,663.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,970.22 : 317,892.09 = 69,789.30 : x
  2. Step 2: Convert to fraction form
    211,970.22/317,892.09 = 69,789.30/x
  3. Step 3: Cross multiply
    211,970.22x = 317,892.09 × 69,789.30
  4. Step 4: Simplify right side
    211,970.22x = 22,185,465,506.25
  5. Step 5: Solve for x
    x = 22,185,465,506.25/211,970.22
  6. Step 6: Final answer
    x = 104,663.13

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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.