Home / 211,191.35-316,788.09-53,419.95

Finding the Fourth Proportional to 211,191.35, 316,788.09 and 53,419.95

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Solution

The fourth proportional to 211,191.35, 316,788.09 and 53,419.95 is: 80,130.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,191.35 : 316,788.09 = 53,419.95 : x
  2. Step 2: Convert to fraction form
    211,191.35/316,788.09 = 53,419.95/x
  3. Step 3: Cross multiply
    211,191.35x = 316,788.09 × 53,419.95
  4. Step 4: Simplify right side
    211,191.35x = 16,922,803,794.85
  5. Step 5: Solve for x
    x = 16,922,803,794.85/211,191.35
  6. Step 6: Final answer
    x = 80,130.20

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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.