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Finding the Fourth Proportional to 354,429.90, 531,644.85 and 349,764.30

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Solution

The fourth proportional to 354,429.90, 531,644.85 and 349,764.30 is: 524,646.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,429.90 : 531,644.85 = 349,764.30 : x
  2. Step 2: Convert to fraction form
    354,429.90/531,644.85 = 349,764.30/x
  3. Step 3: Cross multiply
    354,429.90x = 531,644.85 × 349,764.30
  4. Step 4: Simplify right side
    354,429.90x = 185,950,388,808.86
  5. Step 5: Solve for x
    x = 185,950,388,808.86/354,429.90
  6. Step 6: Final answer
    x = 524,646.45

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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.