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Finding the Fourth Proportional to 384,355.30, 576,473.80 and 128,192.38

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Solution

The fourth proportional to 384,355.30, 576,473.80 and 128,192.38 is: 192,268.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,355.30 : 576,473.80 = 128,192.38 : x
  2. Step 2: Convert to fraction form
    384,355.30/576,473.80 = 128,192.38/x
  3. Step 3: Cross multiply
    384,355.30x = 576,473.80 × 128,192.38
  4. Step 4: Simplify right side
    384,355.30x = 73,899,548,429.64
  5. Step 5: Solve for x
    x = 73,899,548,429.64/384,355.30
  6. Step 6: Final answer
    x = 192,268.84

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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.