Home / 211,586.42-317,432.14-105,020.40

Finding the Fourth Proportional to 211,586.42, 317,432.14 and 105,020.40

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Solution

The fourth proportional to 211,586.42, 317,432.14 and 105,020.40 is: 157,556.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,586.42 : 317,432.14 = 105,020.40 : x
  2. Step 2: Convert to fraction form
    211,586.42/317,432.14 = 105,020.40/x
  3. Step 3: Cross multiply
    211,586.42x = 317,432.14 × 105,020.40
  4. Step 4: Simplify right side
    211,586.42x = 33,336,850,315.66
  5. Step 5: Solve for x
    x = 33,336,850,315.66/211,586.42
  6. Step 6: Final answer
    x = 157,556.66

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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.