Home / 211,788.18-317,588.99-99,500.31

Finding the Fourth Proportional to 211,788.18, 317,588.99 and 99,500.31

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Solution

The fourth proportional to 211,788.18, 317,588.99 and 99,500.31 is: 149,206.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,788.18 : 317,588.99 = 99,500.31 : x
  2. Step 2: Convert to fraction form
    211,788.18/317,588.99 = 99,500.31/x
  3. Step 3: Cross multiply
    211,788.18x = 317,588.99 × 99,500.31
  4. Step 4: Simplify right side
    211,788.18x = 31,600,202,460.09
  5. Step 5: Solve for x
    x = 31,600,202,460.09/211,788.18
  6. Step 6: Final answer
    x = 149,206.64

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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.