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Finding the Fourth Proportional to 325,643.30, 488,534.61 and 100,998.80

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Solution

The fourth proportional to 325,643.30, 488,534.61 and 100,998.80 is: 151,519.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,643.30 : 488,534.61 = 100,998.80 : x
  2. Step 2: Convert to fraction form
    325,643.30/488,534.61 = 100,998.80/x
  3. Step 3: Cross multiply
    325,643.30x = 488,534.61 × 100,998.80
  4. Step 4: Simplify right side
    325,643.30x = 49,341,409,368.47
  5. Step 5: Solve for x
    x = 49,341,409,368.47/325,643.30
  6. Step 6: Final answer
    x = 151,519.81

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1.5x scale

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.