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Finding the Fourth Proportional to 378,632.67, 522,514.58 and 206,554.30

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Solution

The fourth proportional to 378,632.67, 522,514.58 and 206,554.30 is: 285,045.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,632.67 : 522,514.58 = 206,554.30 : x
  2. Step 2: Convert to fraction form
    378,632.67/522,514.58 = 206,554.30/x
  3. Step 3: Cross multiply
    378,632.67x = 522,514.58 × 206,554.30
  4. Step 4: Simplify right side
    378,632.67x = 107,927,630,699.12
  5. Step 5: Solve for x
    x = 107,927,630,699.12/378,632.67
  6. Step 6: Final answer
    x = 285,045.74

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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.