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Finding the Fourth Proportional to 458,718.90, 688,078.35 and 332,091.60

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Solution

The fourth proportional to 458,718.90, 688,078.35 and 332,091.60 is: 498,137.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,718.90 : 688,078.35 = 332,091.60 : x
  2. Step 2: Convert to fraction form
    458,718.90/688,078.35 = 332,091.60/x
  3. Step 3: Cross multiply
    458,718.90x = 688,078.35 × 332,091.60
  4. Step 4: Simplify right side
    458,718.90x = 228,505,040,176.86
  5. Step 5: Solve for x
    x = 228,505,040,176.86/458,718.90
  6. Step 6: Final answer
    x = 498,137.40

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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.