Home / 421,261.43-581,198.90-239,845.05

Finding the Fourth Proportional to 421,261.43, 581,198.90 and 239,845.05

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Solution

The fourth proportional to 421,261.43, 581,198.90 and 239,845.05 is: 330,905.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,261.43 : 581,198.90 = 239,845.05 : x
  2. Step 2: Convert to fraction form
    421,261.43/581,198.90 = 239,845.05/x
  3. Step 3: Cross multiply
    421,261.43x = 581,198.90 × 239,845.05
  4. Step 4: Simplify right side
    421,261.43x = 139,397,678,031.22
  5. Step 5: Solve for x
    x = 139,397,678,031.22/421,261.43
  6. Step 6: Final answer
    x = 330,905.39

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1.5x scale

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.