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Finding the Fourth Proportional to 254,630.88, 381,987.63 and 86,161.59

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Solution

The fourth proportional to 254,630.88, 381,987.63 and 86,161.59 is: 129,256.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    254,630.88 : 381,987.63 = 86,161.59 : x
  2. Step 2: Convert to fraction form
    254,630.88/381,987.63 = 86,161.59/x
  3. Step 3: Cross multiply
    254,630.88x = 381,987.63 × 86,161.59
  4. Step 4: Simplify right side
    254,630.88x = 32,912,661,561.13
  5. Step 5: Solve for x
    x = 32,912,661,561.13/254,630.88
  6. Step 6: Final answer
    x = 129,256.36

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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.