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Finding the Fourth Proportional to 325,419.94, 488,474.97 and 288,221.50

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Solution

The fourth proportional to 325,419.94, 488,474.97 and 288,221.50 is: 432,637.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,419.94 : 488,474.97 = 288,221.50 : x
  2. Step 2: Convert to fraction form
    325,419.94/488,474.97 = 288,221.50/x
  3. Step 3: Cross multiply
    325,419.94x = 488,474.97 × 288,221.50
  4. Step 4: Simplify right side
    325,419.94x = 140,788,988,565.86
  5. Step 5: Solve for x
    x = 140,788,988,565.86/325,419.94
  6. Step 6: Final answer
    x = 432,637.87

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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.