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Finding the Fourth Proportional to 551,434.30, 827,151.45 and 219,010.30

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Solution

The fourth proportional to 551,434.30, 827,151.45 and 219,010.30 is: 328,515.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,434.30 : 827,151.45 = 219,010.30 : x
  2. Step 2: Convert to fraction form
    551,434.30/827,151.45 = 219,010.30/x
  3. Step 3: Cross multiply
    551,434.30x = 827,151.45 × 219,010.30
  4. Step 4: Simplify right side
    551,434.30x = 181,154,687,209.94
  5. Step 5: Solve for x
    x = 181,154,687,209.94/551,434.30
  6. Step 6: Final answer
    x = 328,515.45

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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.