Home / 421,142.21-581,176.31-239,871.02

Finding the Fourth Proportional to 421,142.21, 581,176.31 and 239,871.02

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Solution

The fourth proportional to 421,142.21, 581,176.31 and 239,871.02 is: 331,022.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,142.21 : 581,176.31 = 239,871.02 : x
  2. Step 2: Convert to fraction form
    421,142.21/581,176.31 = 239,871.02/x
  3. Step 3: Cross multiply
    421,142.21x = 581,176.31 × 239,871.02
  4. Step 4: Simplify right side
    421,142.21x = 139,407,354,279.54
  5. Step 5: Solve for x
    x = 139,407,354,279.54/421,142.21
  6. Step 6: Final answer
    x = 331,022.04

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.