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Finding the Fourth Proportional to 385,437.94, 531,905.06 and 213,367.88

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Solution

The fourth proportional to 385,437.94, 531,905.06 and 213,367.88 is: 294,448.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,437.94 : 531,905.06 = 213,367.88 : x
  2. Step 2: Convert to fraction form
    385,437.94/531,905.06 = 213,367.88/x
  3. Step 3: Cross multiply
    385,437.94x = 531,905.06 × 213,367.88
  4. Step 4: Simplify right side
    385,437.94x = 113,491,455,013.47
  5. Step 5: Solve for x
    x = 113,491,455,013.47/385,437.94
  6. Step 6: Final answer
    x = 294,448.06

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1.5x scale

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.