Home / 211,823.61-317,725.70-71,583.45

Finding the Fourth Proportional to 211,823.61, 317,725.70 and 71,583.45

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Solution

The fourth proportional to 211,823.61, 317,725.70 and 71,583.45 is: 107,371.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,823.61 : 317,725.70 = 71,583.45 : x
  2. Step 2: Convert to fraction form
    211,823.61/317,725.70 = 71,583.45/x
  3. Step 3: Cross multiply
    211,823.61x = 317,725.70 × 71,583.45
  4. Step 4: Simplify right side
    211,823.61x = 22,743,901,401.75
  5. Step 5: Solve for x
    x = 22,743,901,401.75/211,823.61
  6. Step 6: Final answer
    x = 107,371.89

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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.