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Finding the Fourth Proportional to 531,266.79, 733,126.78 and 289,544.16

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Solution

The fourth proportional to 531,266.79, 733,126.78 and 289,544.16 is: 399,559.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    531,266.79 : 733,126.78 = 289,544.16 : x
  2. Step 2: Convert to fraction form
    531,266.79/733,126.78 = 289,544.16/x
  3. Step 3: Cross multiply
    531,266.79x = 733,126.78 × 289,544.16
  4. Step 4: Simplify right side
    531,266.79x = 212,272,573,299.11
  5. Step 5: Solve for x
    x = 212,272,573,299.11/531,266.79
  6. Step 6: Final answer
    x = 399,559.28

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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.