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Finding the Fourth Proportional to 385,580.95, 532,084.21 and 213,486.73

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Solution

The fourth proportional to 385,580.95, 532,084.21 and 213,486.73 is: 294,601.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,580.95 : 532,084.21 = 213,486.73 : x
  2. Step 2: Convert to fraction form
    385,580.95/532,084.21 = 213,486.73/x
  3. Step 3: Cross multiply
    385,580.95x = 532,084.21 × 213,486.73
  4. Step 4: Simplify right side
    385,580.95x = 113,592,916,213.61
  5. Step 5: Solve for x
    x = 113,592,916,213.61/385,580.95
  6. Step 6: Final answer
    x = 294,601.99

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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.