Home / 427,795.65-642,324.29-238,625.61

Finding the Fourth Proportional to 427,795.65, 642,324.29 and 238,625.61

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Solution

The fourth proportional to 427,795.65, 642,324.29 and 238,625.61 is: 358,290.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,795.65 : 642,324.29 = 238,625.61 : x
  2. Step 2: Convert to fraction form
    427,795.65/642,324.29 = 238,625.61/x
  3. Step 3: Cross multiply
    427,795.65x = 642,324.29 × 238,625.61
  4. Step 4: Simplify right side
    427,795.65x = 153,275,024,325.94
  5. Step 5: Solve for x
    x = 153,275,024,325.94/427,795.65
  6. Step 6: Final answer
    x = 358,290.28

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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.