Home / 427,791.55-642,318.14-238,621.52

Finding the Fourth Proportional to 427,791.55, 642,318.14 and 238,621.52

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Solution

The fourth proportional to 427,791.55, 642,318.14 and 238,621.52 is: 358,284.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,791.55 : 642,318.14 = 238,621.52 : x
  2. Step 2: Convert to fraction form
    427,791.55/642,318.14 = 238,621.52/x
  3. Step 3: Cross multiply
    427,791.55x = 642,318.14 × 238,621.52
  4. Step 4: Simplify right side
    427,791.55x = 153,270,930,890.37
  5. Step 5: Solve for x
    x = 153,270,930,890.37/427,791.55
  6. Step 6: Final answer
    x = 358,284.15

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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.