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Finding the Fourth Proportional to 303,319.40, 455,853.90 and 264,828.20

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Solution

The fourth proportional to 303,319.40, 455,853.90 and 264,828.20 is: 398,006.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,319.40 : 455,853.90 = 264,828.20 : x
  2. Step 2: Convert to fraction form
    303,319.40/455,853.90 = 264,828.20/x
  3. Step 3: Cross multiply
    303,319.40x = 455,853.90 × 264,828.20
  4. Step 4: Simplify right side
    303,319.40x = 120,722,967,799.98
  5. Step 5: Solve for x
    x = 120,722,967,799.98/303,319.40
  6. Step 6: Final answer
    x = 398,006.09

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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.