Home / 421,579.83-581,765.55-240,350.12

Finding the Fourth Proportional to 421,579.83, 581,765.55 and 240,350.12

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Solution

The fourth proportional to 421,579.83, 581,765.55 and 240,350.12 is: 331,674.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,579.83 : 581,765.55 = 240,350.12 : x
  2. Step 2: Convert to fraction form
    421,579.83/581,765.55 = 240,350.12/x
  3. Step 3: Cross multiply
    421,579.83x = 581,765.55 × 240,350.12
  4. Step 4: Simplify right side
    421,579.83x = 139,827,419,754.37
  5. Step 5: Solve for x
    x = 139,827,419,754.37/421,579.83
  6. Step 6: Final answer
    x = 331,674.83

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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.