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Finding the Fourth Proportional to 551,157.86, 760,538.94 and 309,467

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Solution

The fourth proportional to 551,157.86, 760,538.94 and 309,467 is: 427,031.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,157.86 : 760,538.94 = 309,467 : x
  2. Step 2: Convert to fraction form
    551,157.86/760,538.94 = 309,467/x
  3. Step 3: Cross multiply
    551,157.86x = 760,538.94 × 309,467
  4. Step 4: Simplify right side
    551,157.86x = 235,361,704,144.98
  5. Step 5: Solve for x
    x = 235,361,704,144.98/551,157.86
  6. Step 6: Final answer
    x = 427,031.38

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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.