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Finding the Fourth Proportional to 385,437.66, 531,897.54 and 213,351.95

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Solution

The fourth proportional to 385,437.66, 531,897.54 and 213,351.95 is: 294,422.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,437.66 : 531,897.54 = 213,351.95 : x
  2. Step 2: Convert to fraction form
    385,437.66/531,897.54 = 213,351.95/x
  3. Step 3: Cross multiply
    385,437.66x = 531,897.54 × 213,351.95
  4. Step 4: Simplify right side
    385,437.66x = 113,481,374,699.72
  5. Step 5: Solve for x
    x = 113,481,374,699.72/385,437.66
  6. Step 6: Final answer
    x = 294,422.12

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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.