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Finding the Fourth Proportional to 384,117.60, 576,176.40 and 331,586.40

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Solution

The fourth proportional to 384,117.60, 576,176.40 and 331,586.40 is: 497,379.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,117.60 : 576,176.40 = 331,586.40 : x
  2. Step 2: Convert to fraction form
    384,117.60/576,176.40 = 331,586.40/x
  3. Step 3: Cross multiply
    384,117.60x = 576,176.40 × 331,586.40
  4. Step 4: Simplify right side
    384,117.60x = 191,052,258,240.96
  5. Step 5: Solve for x
    x = 191,052,258,240.96/384,117.60
  6. Step 6: Final answer
    x = 497,379.60

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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.