Home / 421,043.20-581,297.04-274,008.16

Finding the Fourth Proportional to 421,043.20, 581,297.04 and 274,008.16

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Solution

The fourth proportional to 421,043.20, 581,297.04 and 274,008.16 is: 378,298.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,043.20 : 581,297.04 = 274,008.16 : x
  2. Step 2: Convert to fraction form
    421,043.20/581,297.04 = 274,008.16/x
  3. Step 3: Cross multiply
    421,043.20x = 581,297.04 × 274,008.16
  4. Step 4: Simplify right side
    421,043.20x = 159,280,132,343.85
  5. Step 5: Solve for x
    x = 159,280,132,343.85/421,043.20
  6. Step 6: Final answer
    x = 378,298.79

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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.