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Finding the Fourth Proportional to 551,123.37, 760,497.75 and 309,350.52

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Solution

The fourth proportional to 551,123.37, 760,497.75 and 309,350.52 is: 426,874.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,123.37 : 760,497.75 = 309,350.52 : x
  2. Step 2: Convert to fraction form
    551,123.37/760,497.75 = 309,350.52/x
  3. Step 3: Cross multiply
    551,123.37x = 760,497.75 × 309,350.52
  4. Step 4: Simplify right side
    551,123.37x = 235,260,374,421.33
  5. Step 5: Solve for x
    x = 235,260,374,421.33/551,123.37
  6. Step 6: Final answer
    x = 426,874.25

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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.