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Finding the Fourth Proportional to 384,985.99, 577,286.22 and 118,711.89

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Solution

The fourth proportional to 384,985.99, 577,286.22 and 118,711.89 is: 178,008.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,985.99 : 577,286.22 = 118,711.89 : x
  2. Step 2: Convert to fraction form
    384,985.99/577,286.22 = 118,711.89/x
  3. Step 3: Cross multiply
    384,985.99x = 577,286.22 × 118,711.89
  4. Step 4: Simplify right side
    384,985.99x = 68,530,738,247.16
  5. Step 5: Solve for x
    x = 68,530,738,247.16/384,985.99
  6. Step 6: Final answer
    x = 178,008.40

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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.