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Finding the Fourth Proportional to 325,256.40, 487,921.05 and 100,615.05

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Solution

The fourth proportional to 325,256.40, 487,921.05 and 100,615.05 is: 150,933.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,256.40 : 487,921.05 = 100,615.05 : x
  2. Step 2: Convert to fraction form
    325,256.40/487,921.05 = 100,615.05/x
  3. Step 3: Cross multiply
    325,256.40x = 487,921.05 × 100,615.05
  4. Step 4: Simplify right side
    325,256.40x = 49,092,200,841.80
  5. Step 5: Solve for x
    x = 49,092,200,841.80/325,256.40
  6. Step 6: Final answer
    x = 150,933.85

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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.