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Finding the Fourth Proportional to 539,785.10, 809,288.85 and 303,200.30

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Solution

The fourth proportional to 539,785.10, 809,288.85 and 303,200.30 is: 454,582.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,785.10 : 809,288.85 = 303,200.30 : x
  2. Step 2: Convert to fraction form
    539,785.10/809,288.85 = 303,200.30/x
  3. Step 3: Cross multiply
    539,785.10x = 809,288.85 × 303,200.30
  4. Step 4: Simplify right side
    539,785.10x = 245,376,622,106.66
  5. Step 5: Solve for x
    x = 245,376,622,106.66/539,785.10
  6. Step 6: Final answer
    x = 454,582.06

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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.