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Finding the Fourth Proportional to 369,082.31, 553,798.49 and 219,617.87

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Solution

The fourth proportional to 369,082.31, 553,798.49 and 219,617.87 is: 329,530.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    369,082.31 : 553,798.49 = 219,617.87 : x
  2. Step 2: Convert to fraction form
    369,082.31/553,798.49 = 219,617.87/x
  3. Step 3: Cross multiply
    369,082.31x = 553,798.49 × 219,617.87
  4. Step 4: Simplify right side
    369,082.31x = 121,624,040,915.94
  5. Step 5: Solve for x
    x = 121,624,040,915.94/369,082.31
  6. Step 6: Final answer
    x = 329,530.95

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.