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Finding the Fourth Proportional to 365,612.80, 548,419.20 and 318,956.80

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Solution

The fourth proportional to 365,612.80, 548,419.20 and 318,956.80 is: 478,435.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    365,612.80 : 548,419.20 = 318,956.80 : x
  2. Step 2: Convert to fraction form
    365,612.80/548,419.20 = 318,956.80/x
  3. Step 3: Cross multiply
    365,612.80x = 548,419.20 × 318,956.80
  4. Step 4: Simplify right side
    365,612.80x = 174,922,033,090.56
  5. Step 5: Solve for x
    x = 174,922,033,090.56/365,612.80
  6. Step 6: Final answer
    x = 478,435.20

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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.