Home / 211,779.18-317,727.09-71,636.22

Finding the Fourth Proportional to 211,779.18, 317,727.09 and 71,636.22

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Solution

The fourth proportional to 211,779.18, 317,727.09 and 71,636.22 is: 107,474.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,779.18 : 317,727.09 = 71,636.22 : x
  2. Step 2: Convert to fraction form
    211,779.18/317,727.09 = 71,636.22/x
  3. Step 3: Cross multiply
    211,779.18x = 317,727.09 × 71,636.22
  4. Step 4: Simplify right side
    211,779.18x = 22,760,767,719.20
  5. Step 5: Solve for x
    x = 22,760,767,719.20/211,779.18
  6. Step 6: Final answer
    x = 107,474.06

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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.