Home / 211,381.65-317,078.55-53,609.85

Finding the Fourth Proportional to 211,381.65, 317,078.55 and 53,609.85

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Solution

The fourth proportional to 211,381.65, 317,078.55 and 53,609.85 is: 80,416.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,381.65 : 317,078.55 = 53,609.85 : x
  2. Step 2: Convert to fraction form
    211,381.65/317,078.55 = 53,609.85/x
  3. Step 3: Cross multiply
    211,381.65x = 317,078.55 × 53,609.85
  4. Step 4: Simplify right side
    211,381.65x = 16,998,533,503.72
  5. Step 5: Solve for x
    x = 16,998,533,503.72/211,381.65
  6. Step 6: Final answer
    x = 80,416.32

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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.