Home / 427,795.38-642,323.87-238,625.35

Finding the Fourth Proportional to 427,795.38, 642,323.87 and 238,625.35

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Solution

The fourth proportional to 427,795.38, 642,323.87 and 238,625.35 is: 358,289.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,795.38 : 642,323.87 = 238,625.35 : x
  2. Step 2: Convert to fraction form
    427,795.38/642,323.87 = 238,625.35/x
  3. Step 3: Cross multiply
    427,795.38x = 642,323.87 × 238,625.35
  4. Step 4: Simplify right side
    427,795.38x = 153,274,757,282.86
  5. Step 5: Solve for x
    x = 153,274,757,282.86/427,795.38
  6. Step 6: Final answer
    x = 358,289.88

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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.