Home / 509,731.07-764,119.08-172,535.76

Finding the Fourth Proportional to 509,731.07, 764,119.08 and 172,535.76

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Solution

The fourth proportional to 509,731.07, 764,119.08 and 172,535.76 is: 258,642.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,731.07 : 764,119.08 = 172,535.76 : x
  2. Step 2: Convert to fraction form
    509,731.07/764,119.08 = 172,535.76/x
  3. Step 3: Cross multiply
    509,731.07x = 764,119.08 × 172,535.76
  4. Step 4: Simplify right side
    509,731.07x = 131,837,866,198.30
  5. Step 5: Solve for x
    x = 131,837,866,198.30/509,731.07
  6. Step 6: Final answer
    x = 258,642.01

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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.