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Finding the Fourth Proportional to 206,866.24, 285,385.44 and 130,338.88

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Solution

The fourth proportional to 206,866.24, 285,385.44 and 130,338.88 is: 179,810.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,866.24 : 285,385.44 = 130,338.88 : x
  2. Step 2: Convert to fraction form
    206,866.24/285,385.44 = 130,338.88/x
  3. Step 3: Cross multiply
    206,866.24x = 285,385.44 × 130,338.88
  4. Step 4: Simplify right side
    206,866.24x = 37,196,818,617.91
  5. Step 5: Solve for x
    x = 37,196,818,617.91/206,866.24
  6. Step 6: Final answer
    x = 179,810.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.