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Finding the Fourth Proportional to 551,099.37, 760,561.07 and 309,397.80

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Solution

The fourth proportional to 551,099.37, 760,561.07 and 309,397.80 is: 426,993.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,099.37 : 760,561.07 = 309,397.80 : x
  2. Step 2: Convert to fraction form
    551,099.37/760,561.07 = 309,397.80/x
  3. Step 3: Cross multiply
    551,099.37x = 760,561.07 × 309,397.80
  4. Step 4: Simplify right side
    551,099.37x = 235,315,920,276.66
  5. Step 5: Solve for x
    x = 235,315,920,276.66/551,099.37
  6. Step 6: Final answer
    x = 426,993.63

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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.