Home / 777,134.20-1,165,779.08-216,168.72

Finding the Fourth Proportional to 777,134.20, 1,165,779.08 and 216,168.72

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Solution

The fourth proportional to 777,134.20, 1,165,779.08 and 216,168.72 is: 324,274.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    777,134.20 : 1,165,779.08 = 216,168.72 : x
  2. Step 2: Convert to fraction form
    777,134.20/1,165,779.08 = 216,168.72/x
  3. Step 3: Cross multiply
    777,134.20x = 1,165,779.08 × 216,168.72
  4. Step 4: Simplify right side
    777,134.20x = 252,004,971,526.38
  5. Step 5: Solve for x
    x = 252,004,971,526.38/777,134.20
  6. Step 6: Final answer
    x = 324,274.72

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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.