Home / 421,143.21-581,237.01-268,132.59

Finding the Fourth Proportional to 421,143.21, 581,237.01 and 268,132.59

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Solution

The fourth proportional to 421,143.21, 581,237.01 and 268,132.59 is: 370,060.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,143.21 : 581,237.01 = 268,132.59 : x
  2. Step 2: Convert to fraction form
    421,143.21/581,237.01 = 268,132.59/x
  3. Step 3: Cross multiply
    421,143.21x = 581,237.01 × 268,132.59
  4. Step 4: Simplify right side
    421,143.21x = 155,848,584,895.16
  5. Step 5: Solve for x
    x = 155,848,584,895.16/421,143.21
  6. Step 6: Final answer
    x = 370,060.78

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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.