Home / 288,555.10-432,832.66-78,193.04

Finding the Fourth Proportional to 288,555.10, 432,832.66 and 78,193.04

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Solution

The fourth proportional to 288,555.10, 432,832.66 and 78,193.04 is: 117,289.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,555.10 : 432,832.66 = 78,193.04 : x
  2. Step 2: Convert to fraction form
    288,555.10/432,832.66 = 78,193.04/x
  3. Step 3: Cross multiply
    288,555.10x = 432,832.66 × 78,193.04
  4. Step 4: Simplify right side
    288,555.10x = 33,844,499,137.04
  5. Step 5: Solve for x
    x = 33,844,499,137.04/288,555.10
  6. Step 6: Final answer
    x = 117,289.56

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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.