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Finding the Fourth Proportional to 561,136.84, 774,371.20 and 316,124.54

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Solution

The fourth proportional to 561,136.84, 774,371.20 and 316,124.54 is: 436,253.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,136.84 : 774,371.20 = 316,124.54 : x
  2. Step 2: Convert to fraction form
    561,136.84/774,371.20 = 316,124.54/x
  3. Step 3: Cross multiply
    561,136.84x = 774,371.20 × 316,124.54
  4. Step 4: Simplify right side
    561,136.84x = 244,797,735,912.55
  5. Step 5: Solve for x
    x = 244,797,735,912.55/561,136.84
  6. Step 6: Final answer
    x = 436,253.19

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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.