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Finding the Fourth Proportional to 386,407, 533,060.22 and 273,292.12

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Solution

The fourth proportional to 386,407, 533,060.22 and 273,292.12 is: 377,014.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,407 : 533,060.22 = 273,292.12 : x
  2. Step 2: Convert to fraction form
    386,407/533,060.22 = 273,292.12/x
  3. Step 3: Cross multiply
    386,407x = 533,060.22 × 273,292.12
  4. Step 4: Simplify right side
    386,407x = 145,681,157,611.47
  5. Step 5: Solve for x
    x = 145,681,157,611.47/386,407
  6. Step 6: Final answer
    x = 377,014.80

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.