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Finding the Fourth Proportional to 325,698.32, 488,488.92 and 115,337.36

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Solution

The fourth proportional to 325,698.32, 488,488.92 and 115,337.36 is: 172,985.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,698.32 : 488,488.92 = 115,337.36 : x
  2. Step 2: Convert to fraction form
    325,698.32/488,488.92 = 115,337.36/x
  3. Step 3: Cross multiply
    325,698.32x = 488,488.92 × 115,337.36
  4. Step 4: Simplify right side
    325,698.32x = 56,341,022,422.05
  5. Step 5: Solve for x
    x = 56,341,022,422.05/325,698.32
  6. Step 6: Final answer
    x = 172,985.30

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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.