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Finding the Fourth Proportional to 392,690.95, 541,881.57 and 220,599.57

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Solution

The fourth proportional to 392,690.95, 541,881.57 and 220,599.57 is: 304,409.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,690.95 : 541,881.57 = 220,599.57 : x
  2. Step 2: Convert to fraction form
    392,690.95/541,881.57 = 220,599.57/x
  3. Step 3: Cross multiply
    392,690.95x = 541,881.57 × 220,599.57
  4. Step 4: Simplify right side
    392,690.95x = 119,538,841,332.93
  5. Step 5: Solve for x
    x = 119,538,841,332.93/392,690.95
  6. Step 6: Final answer
    x = 304,409.46

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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.