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Finding the Fourth Proportional to 531,690.67, 733,318.27 and 340,721.83

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Solution

The fourth proportional to 531,690.67, 733,318.27 and 340,721.83 is: 469,930.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    531,690.67 : 733,318.27 = 340,721.83 : x
  2. Step 2: Convert to fraction form
    531,690.67/733,318.27 = 340,721.83/x
  3. Step 3: Cross multiply
    531,690.67x = 733,318.27 × 340,721.83
  4. Step 4: Simplify right side
    531,690.67x = 249,857,542,926.83
  5. Step 5: Solve for x
    x = 249,857,542,926.83/531,690.67
  6. Step 6: Final answer
    x = 469,930.28

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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.