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Finding the Fourth Proportional to 385,348.68, 531,429.84 and 330,883.83

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Solution

The fourth proportional to 385,348.68, 531,429.84 and 330,883.83 is: 456,318.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,348.68 : 531,429.84 = 330,883.83 : x
  2. Step 2: Convert to fraction form
    385,348.68/531,429.84 = 330,883.83/x
  3. Step 3: Cross multiply
    385,348.68x = 531,429.84 × 330,883.83
  4. Step 4: Simplify right side
    385,348.68x = 175,841,540,835.49
  5. Step 5: Solve for x
    x = 175,841,540,835.49/385,348.68
  6. Step 6: Final answer
    x = 456,318.00

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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.