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Finding the Fourth Proportional to 501,082.88, 691,526.40 and 331,018.88

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Solution

The fourth proportional to 501,082.88, 691,526.40 and 331,018.88 is: 456,827.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    501,082.88 : 691,526.40 = 331,018.88 : x
  2. Step 2: Convert to fraction form
    501,082.88/691,526.40 = 331,018.88/x
  3. Step 3: Cross multiply
    501,082.88x = 691,526.40 × 331,018.88
  4. Step 4: Simplify right side
    501,082.88x = 228,908,294,418.43
  5. Step 5: Solve for x
    x = 228,908,294,418.43/501,082.88
  6. Step 6: Final answer
    x = 456,827.21

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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.