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Finding the Fourth Proportional to 551,261.20, 760,693.80 and 309,524.80

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Solution

The fourth proportional to 551,261.20, 760,693.80 and 309,524.80 is: 427,118.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,261.20 : 760,693.80 = 309,524.80 : x
  2. Step 2: Convert to fraction form
    551,261.20/760,693.80 = 309,524.80/x
  3. Step 3: Cross multiply
    551,261.20x = 760,693.80 × 309,524.80
  4. Step 4: Simplify right side
    551,261.20x = 235,453,596,306.24
  5. Step 5: Solve for x
    x = 235,453,596,306.24/551,261.20
  6. Step 6: Final answer
    x = 427,118.03

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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.