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Finding the Fourth Proportional to 505,000.20, 757,500.30 and 239,279.70

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Solution

The fourth proportional to 505,000.20, 757,500.30 and 239,279.70 is: 358,919.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,000.20 : 757,500.30 = 239,279.70 : x
  2. Step 2: Convert to fraction form
    505,000.20/757,500.30 = 239,279.70/x
  3. Step 3: Cross multiply
    505,000.20x = 757,500.30 × 239,279.70
  4. Step 4: Simplify right side
    505,000.20x = 181,254,444,533.91
  5. Step 5: Solve for x
    x = 181,254,444,533.91/505,000.20
  6. Step 6: Final answer
    x = 358,919.55

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Similar ratio
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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.