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Finding the Fourth Proportional to 372,534.30, 558,485.55 and 135,738.90

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Solution

The fourth proportional to 372,534.30, 558,485.55 and 135,738.90 is: 203,493.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,534.30 : 558,485.55 = 135,738.90 : x
  2. Step 2: Convert to fraction form
    372,534.30/558,485.55 = 135,738.90/x
  3. Step 3: Cross multiply
    372,534.30x = 558,485.55 × 135,738.90
  4. Step 4: Simplify right side
    372,534.30x = 75,808,214,222.90
  5. Step 5: Solve for x
    x = 75,808,214,222.90/372,534.30
  6. Step 6: Final answer
    x = 203,493.25

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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.