Home / 421,215.20-581,196.34-239,923.16

Finding the Fourth Proportional to 421,215.20, 581,196.34 and 239,923.16

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Solution

The fourth proportional to 421,215.20, 581,196.34 and 239,923.16 is: 331,048.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,215.20 : 581,196.34 = 239,923.16 : x
  2. Step 2: Convert to fraction form
    421,215.20/581,196.34 = 239,923.16/x
  3. Step 3: Cross multiply
    421,215.20x = 581,196.34 × 239,923.16
  4. Step 4: Simplify right side
    421,215.20x = 139,442,462,046.64
  5. Step 5: Solve for x
    x = 139,442,462,046.64/421,215.20
  6. Step 6: Final answer
    x = 331,048.03

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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.