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Finding the Fourth Proportional to 433,964.80, 651,331.20 and 256,249.60

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Solution

The fourth proportional to 433,964.80, 651,331.20 and 256,249.60 is: 384,601.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    433,964.80 : 651,331.20 = 256,249.60 : x
  2. Step 2: Convert to fraction form
    433,964.80/651,331.20 = 256,249.60/x
  3. Step 3: Cross multiply
    433,964.80x = 651,331.20 × 256,249.60
  4. Step 4: Simplify right side
    433,964.80x = 166,903,359,467.52
  5. Step 5: Solve for x
    x = 166,903,359,467.52/433,964.80
  6. Step 6: Final answer
    x = 384,601.15

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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.