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Finding the Fourth Proportional to 256,504.12, 384,797.52 and 79,011.05

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Solution

The fourth proportional to 256,504.12, 384,797.52 and 79,011.05 is: 118,529.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,504.12 : 384,797.52 = 79,011.05 : x
  2. Step 2: Convert to fraction form
    256,504.12/384,797.52 = 79,011.05/x
  3. Step 3: Cross multiply
    256,504.12x = 384,797.52 × 79,011.05
  4. Step 4: Simplify right side
    256,504.12x = 30,403,254,168.61
  5. Step 5: Solve for x
    x = 30,403,254,168.61/256,504.12
  6. Step 6: Final answer
    x = 118,529.30

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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.