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Finding the Fourth Proportional to 481,381.32, 663,902.64 and 309,327.24

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Solution

The fourth proportional to 481,381.32, 663,902.64 and 309,327.24 is: 426,612.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,381.32 : 663,902.64 = 309,327.24 : x
  2. Step 2: Convert to fraction form
    481,381.32/663,902.64 = 309,327.24/x
  3. Step 3: Cross multiply
    481,381.32x = 663,902.64 × 309,327.24
  4. Step 4: Simplify right side
    481,381.32x = 205,363,171,259.91
  5. Step 5: Solve for x
    x = 205,363,171,259.91/481,381.32
  6. Step 6: Final answer
    x = 426,612.26

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1.5x scale

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.