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Finding the Fourth Proportional to 551,416.30, 827,124.45 and 218,992.30

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Solution

The fourth proportional to 551,416.30, 827,124.45 and 218,992.30 is: 328,488.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,416.30 : 827,124.45 = 218,992.30 : x
  2. Step 2: Convert to fraction form
    551,416.30/827,124.45 = 218,992.30/x
  3. Step 3: Cross multiply
    551,416.30x = 827,124.45 × 218,992.30
  4. Step 4: Simplify right side
    551,416.30x = 181,133,885,691.74
  5. Step 5: Solve for x
    x = 181,133,885,691.74/551,416.30
  6. Step 6: Final answer
    x = 328,488.45

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Double scale
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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.