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Finding the Fourth Proportional to 347,137.86, 521,002.64 and 136,923.42

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Solution

The fourth proportional to 347,137.86, 521,002.64 and 136,923.42 is: 205,501.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,137.86 : 521,002.64 = 136,923.42 : x
  2. Step 2: Convert to fraction form
    347,137.86/521,002.64 = 136,923.42/x
  3. Step 3: Cross multiply
    347,137.86x = 521,002.64 × 136,923.42
  4. Step 4: Simplify right side
    347,137.86x = 71,337,463,297.83
  5. Step 5: Solve for x
    x = 71,337,463,297.83/347,137.86
  6. Step 6: Final answer
    x = 205,501.82

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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.