Home / 420,905.22-581,040.42-268,152.90

Finding the Fourth Proportional to 420,905.22, 581,040.42 and 268,152.90

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Solution

The fourth proportional to 420,905.22, 581,040.42 and 268,152.90 is: 370,172.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,905.22 : 581,040.42 = 268,152.90 : x
  2. Step 2: Convert to fraction form
    420,905.22/581,040.42 = 268,152.90/x
  3. Step 3: Cross multiply
    420,905.22x = 581,040.42 × 268,152.90
  4. Step 4: Simplify right side
    420,905.22x = 155,807,673,640.22
  5. Step 5: Solve for x
    x = 155,807,673,640.22/420,905.22
  6. Step 6: Final answer
    x = 370,172.82

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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.