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Finding the Fourth Proportional to 576,005.20, 864,007.80 and 201,979.60

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Solution

The fourth proportional to 576,005.20, 864,007.80 and 201,979.60 is: 302,969.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    576,005.20 : 864,007.80 = 201,979.60 : x
  2. Step 2: Convert to fraction form
    576,005.20/864,007.80 = 201,979.60/x
  3. Step 3: Cross multiply
    576,005.20x = 864,007.80 × 201,979.60
  4. Step 4: Simplify right side
    576,005.20x = 174,511,949,840.88
  5. Step 5: Solve for x
    x = 174,511,949,840.88/576,005.20
  6. Step 6: Final answer
    x = 302,969.40

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Similar ratio
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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.