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Finding the Fourth Proportional to 372,493.80, 558,740.70 and 259,936.20

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Solution

The fourth proportional to 372,493.80, 558,740.70 and 259,936.20 is: 389,904.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,493.80 : 558,740.70 = 259,936.20 : x
  2. Step 2: Convert to fraction form
    372,493.80/558,740.70 = 259,936.20/x
  3. Step 3: Cross multiply
    372,493.80x = 558,740.70 × 259,936.20
  4. Step 4: Simplify right side
    372,493.80x = 145,236,934,343.34
  5. Step 5: Solve for x
    x = 145,236,934,343.34/372,493.80
  6. Step 6: Final answer
    x = 389,904.30

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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.