Home / 427,786.73-642,310.91-238,616.70

Finding the Fourth Proportional to 427,786.73, 642,310.91 and 238,616.70

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Solution

The fourth proportional to 427,786.73, 642,310.91 and 238,616.70 is: 358,276.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,786.73 : 642,310.91 = 238,616.70 : x
  2. Step 2: Convert to fraction form
    427,786.73/642,310.91 = 238,616.70/x
  3. Step 3: Cross multiply
    427,786.73x = 642,310.91 × 238,616.70
  4. Step 4: Simplify right side
    427,786.73x = 153,266,111,966.48
  5. Step 5: Solve for x
    x = 153,266,111,966.48/427,786.73
  6. Step 6: Final answer
    x = 358,276.92

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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.