Home / 211,407.20-317,108.64-71,164.88

Finding the Fourth Proportional to 211,407.20, 317,108.64 and 71,164.88

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Solution

The fourth proportional to 211,407.20, 317,108.64 and 71,164.88 is: 106,746.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,407.20 : 317,108.64 = 71,164.88 : x
  2. Step 2: Convert to fraction form
    211,407.20/317,108.64 = 71,164.88/x
  3. Step 3: Cross multiply
    211,407.20x = 317,108.64 × 71,164.88
  4. Step 4: Simplify right side
    211,407.20x = 22,566,998,312.56
  5. Step 5: Solve for x
    x = 22,566,998,312.56/211,407.20
  6. Step 6: Final answer
    x = 106,746.59

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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.