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Finding the Fourth Proportional to 551,402.30, 827,103.45 and 218,978.30

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Solution

The fourth proportional to 551,402.30, 827,103.45 and 218,978.30 is: 328,467.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,402.30 : 827,103.45 = 218,978.30 : x
  2. Step 2: Convert to fraction form
    551,402.30/827,103.45 = 218,978.30/x
  3. Step 3: Cross multiply
    551,402.30x = 827,103.45 × 218,978.30
  4. Step 4: Simplify right side
    551,402.30x = 181,117,707,405.14
  5. Step 5: Solve for x
    x = 181,117,707,405.14/551,402.30
  6. Step 6: Final answer
    x = 328,467.45

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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.