Home / 427,789.55-642,315.14-238,619.52

Finding the Fourth Proportional to 427,789.55, 642,315.14 and 238,619.52

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Solution

The fourth proportional to 427,789.55, 642,315.14 and 238,619.52 is: 358,281.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,789.55 : 642,315.14 = 238,619.52 : x
  2. Step 2: Convert to fraction form
    427,789.55/642,315.14 = 238,619.52/x
  3. Step 3: Cross multiply
    427,789.55x = 642,315.14 × 238,619.52
  4. Step 4: Simplify right side
    427,789.55x = 153,268,930,097.26
  5. Step 5: Solve for x
    x = 153,268,930,097.26/427,789.55
  6. Step 6: Final answer
    x = 358,281.14

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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.