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Finding the Fourth Proportional to 324,280.12, 485,423.16 and 276,450.28

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Solution

The fourth proportional to 324,280.12, 485,423.16 and 276,450.28 is: 413,825.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,280.12 : 485,423.16 = 276,450.28 : x
  2. Step 2: Convert to fraction form
    324,280.12/485,423.16 = 276,450.28/x
  3. Step 3: Cross multiply
    324,280.12x = 485,423.16 × 276,450.28
  4. Step 4: Simplify right side
    324,280.12x = 134,195,368,500.49
  5. Step 5: Solve for x
    x = 134,195,368,500.49/324,280.12
  6. Step 6: Final answer
    x = 413,825.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.