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Finding the Fourth Proportional to 325,384.60, 488,031.90 and 100,899.40

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Solution

The fourth proportional to 325,384.60, 488,031.90 and 100,899.40 is: 151,335.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,384.60 : 488,031.90 = 100,899.40 : x
  2. Step 2: Convert to fraction form
    325,384.60/488,031.90 = 100,899.40/x
  3. Step 3: Cross multiply
    325,384.60x = 488,031.90 × 100,899.40
  4. Step 4: Simplify right side
    325,384.60x = 49,242,125,890.86
  5. Step 5: Solve for x
    x = 49,242,125,890.86/325,384.60
  6. Step 6: Final answer
    x = 151,335.15

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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.